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Diffstat (limited to 'doc/tutorial/syntax.md')
| -rw-r--r-- | doc/tutorial/syntax.md | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/doc/tutorial/syntax.md b/doc/tutorial/syntax.md index acef5163a59..75bcb2df4cd 100644 --- a/doc/tutorial/syntax.md +++ b/doc/tutorial/syntax.md @@ -109,11 +109,12 @@ constants can be defined with `const`: ## Types -The `-> bool` in the last example is the way a function's return type -is written. For functions that do not return a meaningful value (these -conceptually return nil in Rust), you can optionally say `-> ()` (`()` -is how nil is written), but usually the return annotation is simply -left off, as in the `fn main() { ... }` examples we've seen earlier. +The `-> bool` in the `is_four` example is the way a function's return +type is written. For functions that do not return a meaningful value +(these conceptually return nil in Rust), you can optionally say `-> +()` (`()` is how nil is written), but usually the return annotation is +simply left off, as in the `fn main() { ... }` examples we've seen +earlier. Every argument to a function must have its type declared (for example, `x: int`). Inside the function, type inference will be able to |