diff options
Diffstat (limited to 'src/doc/book/listings/ch06-enums-and-pattern-matching/listing-06-05')
3 files changed, 30 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.lock b/src/doc/book/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.lock new file mode 100644 index 000000000..f62e8ac45 --- /dev/null +++ b/src/doc/book/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "enums" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.toml b/src/doc/book/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.toml new file mode 100644 index 000000000..e959295f9 --- /dev/null +++ b/src/doc/book/listings/ch06-enums-and-pattern-matching/listing-06-05/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "enums" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch06-enums-and-pattern-matching/listing-06-05/src/main.rs b/src/doc/book/listings/ch06-enums-and-pattern-matching/listing-06-05/src/main.rs new file mode 100644 index 000000000..c86190aa7 --- /dev/null +++ b/src/doc/book/listings/ch06-enums-and-pattern-matching/listing-06-05/src/main.rs @@ -0,0 +1,18 @@ +fn main() { + // ANCHOR: here + fn plus_one(x: Option<i32>) -> Option<i32> { + match x { + // ANCHOR: first_arm + None => None, + // ANCHOR_END: first_arm + // ANCHOR: second_arm + Some(i) => Some(i + 1), + // ANCHOR_END: second_arm + } + } + + let five = Some(5); + let six = plus_one(five); + let none = plus_one(None); + // ANCHOR_END: here +} |