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auto merge of #15121 : steveklabnik/rust/matching_docs, r=alexcrichton

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Fixes #11113.
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bors 2014-06-25 15:21:26 +00:00
commit 7be7a8fb3a
1 changed files with 8 additions and 3 deletions
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src/doc/tutorial.md
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@ -566,9 +566,14 @@ tuple, introducing two variables at once: `a` and `b`.
let (a, b) = get_tuple_of_two_ints();
~~~~
Let bindings only work with _irrefutable_ patterns: that is, patterns
that can never fail to match. This excludes `let` from matching
literals and most `enum` variants.
Let bindings only work with _irrefutable_ patterns: that is, patterns that can
never fail to match. This excludes `let` from matching literals and most `enum`
variants as binding patterns, since most such patterns are not irrefutable. For
example, this will not compile:
~~~~{ignore}
let (a, 2) = (1, 2);
~~~~
## Loops