diff options
Diffstat (limited to 'src/doc/book/listings/ch18-patterns-and-matching')
108 files changed, 871 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-01/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-01/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-01/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-01/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-01/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-01/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-01/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-01/src/main.rs new file mode 100644 index 000000000..fc87768fb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-01/src/main.rs @@ -0,0 +1,19 @@ +fn main() { + let favorite_color: Option<&str> = None; + let is_tuesday = false; + let age: Result<u8, _> = "34".parse(); + + if let Some(color) = favorite_color { + println!("Using your favorite color, {color}, as the background"); + } else if is_tuesday { + println!("Tuesday is green day!"); + } else if let Ok(age) = age { + if age > 30 { + println!("Using purple as the background color"); + } else { + println!("Using orange as the background color"); + } + } else { + println!("Using blue as the background color"); + } +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-02/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-02/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-02/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-02/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-02/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-02/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-02/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-02/src/main.rs new file mode 100644 index 000000000..5f75a4f2d --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-02/src/main.rs @@ -0,0 +1,13 @@ +fn main() { + // ANCHOR: here + let mut stack = Vec::new(); + + stack.push(1); + stack.push(2); + stack.push(3); + + while let Some(top) = stack.pop() { + println!("{}", top); + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/output.txt b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/output.txt new file mode 100644 index 000000000..02fdecbf5 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/output.txt @@ -0,0 +1,7 @@ +$ cargo run + Compiling patterns v0.1.0 (file:///projects/patterns) + Finished dev [unoptimized + debuginfo] target(s) in 0.52s + Running `target/debug/patterns` +a is at index 0 +b is at index 1 +c is at index 2 diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/src/main.rs new file mode 100644 index 000000000..eb922d62c --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-03/src/main.rs @@ -0,0 +1,9 @@ +fn main() { + // ANCHOR: here + let v = vec!['a', 'b', 'c']; + + for (index, value) in v.iter().enumerate() { + println!("{} is at index {}", value, index); + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-04/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-04/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-04/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-04/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-04/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-04/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-04/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-04/src/main.rs new file mode 100644 index 000000000..27b0c3fbd --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-04/src/main.rs @@ -0,0 +1,5 @@ +fn main() { + // ANCHOR: here + let (x, y, z) = (1, 2, 3); + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/output.txt b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/output.txt new file mode 100644 index 000000000..57916a1f1 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/output.txt @@ -0,0 +1,15 @@ +$ cargo run + Compiling patterns v0.1.0 (file:///projects/patterns) +error[E0308]: mismatched types + --> src/main.rs:2:9 + | +2 | let (x, y) = (1, 2, 3); + | ^^^^^^ --------- this expression has type `({integer}, {integer}, {integer})` + | | + | expected a tuple with 3 elements, found one with 2 elements + | + = note: expected tuple `({integer}, {integer}, {integer})` + found tuple `(_, _)` + +For more information about this error, try `rustc --explain E0308`. +error: could not compile `patterns` due to previous error diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/src/main.rs new file mode 100644 index 000000000..39f768e29 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-05/src/main.rs @@ -0,0 +1,5 @@ +fn main() { + // ANCHOR: here + let (x, y) = (1, 2, 3); + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-06/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-06/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-06/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-06/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-06/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-06/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-06/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-06/src/main.rs new file mode 100644 index 000000000..c5d71e6c1 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-06/src/main.rs @@ -0,0 +1,7 @@ +// ANCHOR: here +fn foo(x: i32) { + // code goes here +} +// ANCHOR_END: here + +fn main() {} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-07/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-07/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-07/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-07/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-07/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-07/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-07/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-07/src/main.rs new file mode 100644 index 000000000..4eccb8088 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-07/src/main.rs @@ -0,0 +1,8 @@ +fn print_coordinates(&(x, y): &(i32, i32)) { + println!("Current location: ({}, {})", x, y); +} + +fn main() { + let point = (3, 5); + print_coordinates(&point); +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/output.txt b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/output.txt new file mode 100644 index 000000000..72274d07c --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/output.txt @@ -0,0 +1,19 @@ +$ cargo run + Compiling patterns v0.1.0 (file:///projects/patterns) +error[E0005]: refutable pattern in local binding: `None` not covered + --> src/main.rs:3:9 + | +3 | let Some(x) = some_option_value; + | ^^^^^^^ pattern `None` not covered + | + = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant + = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html +note: `Option<i32>` defined here + = note: the matched value is of type `Option<i32>` +help: you might want to use `if let` to ignore the variant that isn't matched + | +3 | let x = if let Some(x) = some_option_value { x } else { todo!() }; + | ++++++++++ ++++++++++++++++++++++ + +For more information about this error, try `rustc --explain E0005`. +error: could not compile `patterns` due to previous error diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/src/main.rs new file mode 100644 index 000000000..7baa02a49 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-08/src/main.rs @@ -0,0 +1,6 @@ +fn main() { + let some_option_value: Option<i32> = None; + // ANCHOR: here + let Some(x) = some_option_value; + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-09/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-09/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-09/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-09/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-09/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-09/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-09/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-09/src/main.rs new file mode 100644 index 000000000..d6274fc0e --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-09/src/main.rs @@ -0,0 +1,8 @@ +fn main() { + let some_option_value: Option<i32> = None; + // ANCHOR: here + if let Some(x) = some_option_value { + println!("{}", x); + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/output.txt b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/output.txt new file mode 100644 index 000000000..702d10a23 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/output.txt @@ -0,0 +1,16 @@ +$ cargo run + Compiling patterns v0.1.0 (file:///projects/patterns) +warning: irrefutable `if let` pattern + --> src/main.rs:2:8 + | +2 | if let x = 5 { + | ^^^^^^^^^ + | + = note: `#[warn(irrefutable_let_patterns)]` on by default + = note: this pattern will always match, so the `if let` is useless + = help: consider replacing the `if let` with a `let` + +warning: `patterns` (bin "patterns") generated 1 warning + Finished dev [unoptimized + debuginfo] target(s) in 0.39s + Running `target/debug/patterns` +5 diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/src/main.rs new file mode 100644 index 000000000..cb81772e0 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-10/src/main.rs @@ -0,0 +1,7 @@ +fn main() { + // ANCHOR: here + if let x = 5 { + println!("{}", x); + }; + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-11/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-11/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-11/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-11/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-11/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-11/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs new file mode 100644 index 000000000..db942b7ac --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs @@ -0,0 +1,14 @@ +fn main() { + // ANCHOR: here + let x = Some(5); + let y = 10; + + match x { + Some(50) => println!("Got 50"), + Some(y) => println!("Matched, y = {y}"), + _ => println!("Default case, x = {:?}", x), + } + + println!("at the end: x = {:?}, y = {y}", x); + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-12/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-12/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-12/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-12/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-12/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-12/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-12/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-12/src/main.rs new file mode 100644 index 000000000..62f4ccbf1 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-12/src/main.rs @@ -0,0 +1,12 @@ +struct Point { + x: i32, + y: i32, +} + +fn main() { + let p = Point { x: 0, y: 7 }; + + let Point { x: a, y: b } = p; + assert_eq!(0, a); + assert_eq!(7, b); +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-13/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-13/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-13/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-13/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-13/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-13/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-13/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-13/src/main.rs new file mode 100644 index 000000000..5badc1594 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-13/src/main.rs @@ -0,0 +1,12 @@ +struct Point { + x: i32, + y: i32, +} + +fn main() { + let p = Point { x: 0, y: 7 }; + + let Point { x, y } = p; + assert_eq!(0, x); + assert_eq!(7, y); +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-14/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-14/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-14/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-14/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-14/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-14/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-14/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-14/src/main.rs new file mode 100644 index 000000000..8d445d9b9 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-14/src/main.rs @@ -0,0 +1,16 @@ +struct Point { + x: i32, + y: i32, +} + +// ANCHOR: here +fn main() { + let p = Point { x: 0, y: 7 }; + + match p { + Point { x, y: 0 } => println!("On the x axis at {}", x), + Point { x: 0, y } => println!("On the y axis at {}", y), + Point { x, y } => println!("On neither axis: ({}, {})", x, y), + } +} +// ANCHOR_END: here diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-15/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-15/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-15/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-15/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-15/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-15/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs new file mode 100644 index 000000000..9b8dac193 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs @@ -0,0 +1,27 @@ +enum Message { + Quit, + Move { x: i32, y: i32 }, + Write(String), + ChangeColor(i32, i32, i32), +} + +fn main() { + let msg = Message::ChangeColor(0, 160, 255); + + match msg { + Message::Quit => { + println!("The Quit variant has no data to destructure.") + } + Message::Move { x, y } => { + println!( + "Move in the x direction {} and in the y direction {}", + x, y + ); + } + Message::Write(text) => println!("Text message: {}", text), + Message::ChangeColor(r, g, b) => println!( + "Change the color to red {}, green {}, and blue {}", + r, g, b + ), + } +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-16/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-16/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-16/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-16/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-16/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-16/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-16/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-16/src/main.rs new file mode 100644 index 000000000..ed6a20bf4 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-16/src/main.rs @@ -0,0 +1,27 @@ +enum Color { + Rgb(i32, i32, i32), + Hsv(i32, i32, i32), +} + +enum Message { + Quit, + Move { x: i32, y: i32 }, + Write(String), + ChangeColor(Color), +} + +fn main() { + let msg = Message::ChangeColor(Color::Hsv(0, 160, 255)); + + match msg { + Message::ChangeColor(Color::Rgb(r, g, b)) => println!( + "Change the color to red {}, green {}, and blue {}", + r, g, b + ), + Message::ChangeColor(Color::Hsv(h, s, v)) => println!( + "Change the color to hue {}, saturation {}, and value {}", + h, s, v + ), + _ => (), + } +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-17/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-17/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-17/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-17/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-17/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-17/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-17/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-17/src/main.rs new file mode 100644 index 000000000..cf1fbe072 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-17/src/main.rs @@ -0,0 +1,7 @@ +fn foo(_: i32, y: i32) { + println!("This code only uses the y parameter: {}", y); +} + +fn main() { + foo(3, 4); +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-18/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-18/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-18/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-18/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-18/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-18/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-18/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-18/src/main.rs new file mode 100644 index 000000000..b776c64c4 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-18/src/main.rs @@ -0,0 +1,17 @@ +fn main() { + // ANCHOR: here + let mut setting_value = Some(5); + let new_setting_value = Some(10); + + match (setting_value, new_setting_value) { + (Some(_), Some(_)) => { + println!("Can't overwrite an existing customized value"); + } + _ => { + setting_value = new_setting_value; + } + } + + println!("setting is {:?}", setting_value); + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-19/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-19/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-19/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-19/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-19/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-19/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-19/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-19/src/main.rs new file mode 100644 index 000000000..e28dab111 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-19/src/main.rs @@ -0,0 +1,11 @@ +fn main() { + // ANCHOR: here + let numbers = (2, 4, 8, 16, 32); + + match numbers { + (first, _, third, _, fifth) => { + println!("Some numbers: {first}, {third}, {fifth}") + } + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-20/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-20/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-20/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-20/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-20/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-20/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-20/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-20/src/main.rs new file mode 100644 index 000000000..1ffc46bad --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-20/src/main.rs @@ -0,0 +1,4 @@ +fn main() { + let _x = 5; + let y = 10; +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-21/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-21/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-21/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-21/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-21/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-21/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-21/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-21/src/main.rs new file mode 100644 index 000000000..980610503 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-21/src/main.rs @@ -0,0 +1,11 @@ +fn main() { + // ANCHOR: here + let s = Some(String::from("Hello!")); + + if let Some(_s) = s { + println!("found a string"); + } + + println!("{:?}", s); + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-22/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-22/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-22/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-22/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-22/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-22/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-22/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-22/src/main.rs new file mode 100644 index 000000000..e2faa345b --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-22/src/main.rs @@ -0,0 +1,11 @@ +fn main() { + // ANCHOR: here + let s = Some(String::from("Hello!")); + + if let Some(_) = s { + println!("found a string"); + } + + println!("{:?}", s); + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-23/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-23/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-23/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-23/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-23/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-23/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-23/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-23/src/main.rs new file mode 100644 index 000000000..7a9d9bb36 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-23/src/main.rs @@ -0,0 +1,15 @@ +fn main() { + // ANCHOR: here + struct Point { + x: i32, + y: i32, + z: i32, + } + + let origin = Point { x: 0, y: 0, z: 0 }; + + match origin { + Point { x, .. } => println!("x is {}", x), + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-24/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-24/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-24/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-24/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-24/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-24/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-24/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-24/src/main.rs new file mode 100644 index 000000000..3f9aaafc2 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-24/src/main.rs @@ -0,0 +1,9 @@ +fn main() { + let numbers = (2, 4, 8, 16, 32); + + match numbers { + (first, .., last) => { + println!("Some numbers: {first}, {last}"); + } + } +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/Cargo.lock new file mode 100644 index 000000000..a233623e5 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/Cargo.lock @@ -0,0 +1,4 @@ +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/output.txt b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/output.txt new file mode 100644 index 000000000..7e0357eac --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/output.txt @@ -0,0 +1,11 @@ +$ cargo run + Compiling patterns v0.1.0 (file:///projects/patterns) +error: `..` can only be used once per tuple pattern + --> src/main.rs:5:22 + | +5 | (.., second, ..) => { + | -- ^^ can only be used once per tuple pattern + | | + | previously used here + +error: could not compile `patterns` due to previous error diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/rustfmt-ignore b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/rustfmt-ignore new file mode 100644 index 000000000..06a976dd4 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/rustfmt-ignore @@ -0,0 +1 @@ +This listing deliberately doesn't parse so rustfmt fails. diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/src/main.rs new file mode 100644 index 000000000..b90884eb9 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-25/src/main.rs @@ -0,0 +1,9 @@ +fn main() { + let numbers = (2, 4, 8, 16, 32); + + match numbers { + (.., second, ..) => { + println!("Some numbers: {}", second) + }, + } +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-26/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-26/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-26/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-26/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-26/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-26/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-26/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-26/src/main.rs new file mode 100644 index 000000000..41fce9795 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-26/src/main.rs @@ -0,0 +1,11 @@ +fn main() { + // ANCHOR: here + let num = Some(4); + + match num { + Some(x) if x % 2 == 0 => println!("The number {} is even", x), + Some(x) => println!("The number {} is odd", x), + None => (), + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-27/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-27/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-27/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-27/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-27/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-27/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-27/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-27/src/main.rs new file mode 100644 index 000000000..8386a0ab8 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-27/src/main.rs @@ -0,0 +1,12 @@ +fn main() { + let x = Some(5); + let y = 10; + + match x { + Some(50) => println!("Got 50"), + Some(n) if n == y => println!("Matched, n = {n}"), + _ => println!("Default case, x = {:?}", x), + } + + println!("at the end: x = {:?}, y = {y}", x); +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-28/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-28/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-28/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-28/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-28/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-28/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-28/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-28/src/main.rs new file mode 100644 index 000000000..15804553f --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-28/src/main.rs @@ -0,0 +1,11 @@ +fn main() { + // ANCHOR: here + let x = 4; + let y = false; + + match x { + 4 | 5 | 6 if y => println!("yes"), + _ => println!("no"), + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-29/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-29/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-29/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-29/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-29/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-29/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/listing-18-29/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-29/src/main.rs new file mode 100644 index 000000000..3514deb63 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/listing-18-29/src/main.rs @@ -0,0 +1,19 @@ +fn main() { + // ANCHOR: here + enum Message { + Hello { id: i32 }, + } + + let msg = Message::Hello { id: 5 }; + + match msg { + Message::Hello { + id: id_variable @ 3..=7, + } => println!("Found an id in range: {}", id_variable), + Message::Hello { id: 10..=12 } => { + println!("Found an id in another range") + } + Message::Hello { id } => println!("Found some other id: {}", id), + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-01-literals/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-01-literals/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-01-literals/src/main.rs new file mode 100644 index 000000000..7978e1ade --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-01-literals/src/main.rs @@ -0,0 +1,12 @@ +fn main() { + // ANCHOR: here + let x = 1; + + match x { + 1 => println!("one"), + 2 => println!("two"), + 3 => println!("three"), + _ => println!("anything"), + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/src/main.rs new file mode 100644 index 000000000..e52d815d8 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-02-multiple-patterns/src/main.rs @@ -0,0 +1,11 @@ +fn main() { + // ANCHOR: here + let x = 1; + + match x { + 1 | 2 => println!("one or two"), + 3 => println!("three"), + _ => println!("anything"), + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-03-ranges/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-03-ranges/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-03-ranges/src/main.rs new file mode 100644 index 000000000..a3ebe7af0 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-03-ranges/src/main.rs @@ -0,0 +1,10 @@ +fn main() { + // ANCHOR: here + let x = 5; + + match x { + 1..=5 => println!("one through five"), + _ => println!("something else"), + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/src/main.rs new file mode 100644 index 000000000..8cebfef5e --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-04-ranges-of-char/src/main.rs @@ -0,0 +1,11 @@ +fn main() { + // ANCHOR: here + let x = 'c'; + + match x { + 'a'..='j' => println!("early ASCII letter"), + 'k'..='z' => println!("late ASCII letter"), + _ => println!("something else"), + } + // ANCHOR_END: here +} diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.lock b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.lock new file mode 100644 index 000000000..2b4fa2903 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "patterns" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.toml b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.toml new file mode 100644 index 000000000..82fe057bb --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "patterns" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/src/main.rs b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/src/main.rs new file mode 100644 index 000000000..962d09349 --- /dev/null +++ b/src/doc/book/listings/ch18-patterns-and-matching/no-listing-05-destructuring-structs-and-tuples/src/main.rs @@ -0,0 +1,10 @@ +fn main() { + struct Point { + x: i32, + y: i32, + } + + // ANCHOR: here + let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); + // ANCHOR_END: here +} |