diff options
Diffstat (limited to 'src/doc/book/redirects/match.md')
-rw-r--r-- | src/doc/book/redirects/match.md | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/doc/book/redirects/match.md b/src/doc/book/redirects/match.md new file mode 100644 index 000000000..fd28ba8de --- /dev/null +++ b/src/doc/book/redirects/match.md @@ -0,0 +1,38 @@ +% Match + +<small>There is a new edition of the book and this is an old link.</small> + +> `match` allows us to compare a value against a series of patterns and then execute code based on which pattern matches. +> Patterns can be made up of literal values, variable names, wildcards, and many other things. + +```rust +enum Coin { + Penny, + Nickel, + Dime, + Quarter, +} + +fn value_in_cents(coin: Coin) -> u32 { + match coin { + Coin::Penny => 1, + Coin::Nickel => 5, + Coin::Dime => 10, + Coin::Quarter => 25, + } +} +``` + +--- + +Here are the relevant sections in the new and old books: + +* **[in the current edition: Ch 6.02 — The `match` Control Flow Operator][2]** +* [in the current edition: Ch 18.00 — Patterns][3] +* <small>[In the first edition: Ch 3.14 — Match][1]</small> + + +[1]: https://doc.rust-lang.org/1.30.0/book/first-edition/match.html +[2]: ch06-02-match.html +[3]: ch18-00-patterns.html + |