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@ -559,9 +559,14 @@ tuple, introducing two variables at once: `a` and `b`.
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let (a, b) = get_tuple_of_two_ints();
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~~~~
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Let bindings only work with _irrefutable_ patterns: that is, patterns
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that can never fail to match. This excludes `let` from matching
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literals and most `enum` variants.
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Let bindings only work with _irrefutable_ patterns: that is, patterns that can
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never fail to match. This excludes `let` from matching literals and most `enum`
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variants as binding patterns, since most such patterns are not irrefutable. For
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example, this will not compile:
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~~~~{ignore}
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let (a, 2) = (1, 2);
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~~~~
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## Loops
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