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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
| commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
| tree | 173a775858bd501c378080a10dca74132f05bc50 /src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition | |
| parent | Initial commit. (diff) | |
| download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip | |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition')
3 files changed, 29 insertions, 0 deletions
diff --git a/src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.lock b/src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.lock new file mode 100644 index 000000000..c0c98a79c --- /dev/null +++ b/src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.lock @@ -0,0 +1,6 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "types-example" +version = "0.1.0" + diff --git a/src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.toml b/src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.toml new file mode 100644 index 000000000..a2ae20c77 --- /dev/null +++ b/src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "types-example" +version = "0.1.0" +edition = "2021" + +[dependencies] diff --git a/src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition/src/lib.rs b/src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition/src/lib.rs new file mode 100644 index 000000000..aa4f937ff --- /dev/null +++ b/src/doc/book/listings/ch19-advanced-features/no-listing-09-unwrap-definition/src/lib.rs @@ -0,0 +1,17 @@ +enum Option<T> { + Some(T), + None, +} + +use crate::Option::*; + +// ANCHOR: here +impl<T> Option<T> { + pub fn unwrap(self) -> T { + match self { + Some(val) => val, + None => panic!("called `Option::unwrap()` on a `None` value"), + } + } +} +// ANCHOR_END: here |