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| -rw-r--r-- | src/doc/tutorial.md | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/doc/tutorial.md b/src/doc/tutorial.md index d4f446b2933..65ed2680dd6 100644 --- a/src/doc/tutorial.md +++ b/src/doc/tutorial.md @@ -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 |