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Auto merge of #47036 - QuietMisdreavus:i-like-big-chars, r=frewsxcv

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update char_indices example to highlight big chars

There was a comment today in IRC where someone thought `char_indices()` and `chars().enumerate()` were equivalent, so i wanted to put an example in the docs where that wasn't true.

r? @rust-lang/docs
This commit is contained in:
bors 2017-12-28 19:06:39 +00:00
commit 77e189cd79
1 changed files with 6 additions and 2 deletions
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8
src/liballoc/str.rs
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@ -719,13 +719,17 @@ impl str {
/// Remember, [`char`]s may not match your human intuition about characters: /// Remember, [`char`]s may not match your human intuition about characters:
/// ///
/// ``` /// ```
/// let y = "y̆"; /// let yes = "y̆es";
/// ///
/// let mut char_indices = y.char_indices(); /// let mut char_indices = yes.char_indices();
/// ///
/// assert_eq!(Some((0, 'y')), char_indices.next()); // not (0, 'y̆') /// assert_eq!(Some((0, 'y')), char_indices.next()); // not (0, 'y̆')
/// assert_eq!(Some((1, '\u{0306}')), char_indices.next()); /// assert_eq!(Some((1, '\u{0306}')), char_indices.next());
/// ///
/// // note the 3 here - the last character took up two bytes
/// assert_eq!(Some((3, 'e')), char_indices.next());
/// assert_eq!(Some((4, 's')), char_indices.next());
///
/// assert_eq!(None, char_indices.next()); /// assert_eq!(None, char_indices.next());
/// ``` /// ```
#[stable(feature = "rust1", since = "1.0.0")] #[stable(feature = "rust1", since = "1.0.0")]