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Update str::split_at_mut example to demonstrate mutability.

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This commit is contained in:
Corey Farwell 2017-08-04 18:01:34 -04:00
parent ea6a657175
commit de4f1a170f
1 changed files with 10 additions and 6 deletions
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16
src/liballoc/str.rs
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@ -330,7 +330,7 @@ impl str {
/// ```
/// let mut v = String::from("🗻∈🌏");
///
/// assert_eq!(Some("🗻"), v.get(0..4);
/// assert_eq!(Some("🗻"), v.get(0..4));
///
/// // indices not on UTF-8 sequence boundaries
/// assert!(v.get_mut(1..).is_none());
@ -573,12 +573,16 @@ impl str {
/// Basic usage:
///
/// ```
/// use std::ascii::AsciiExt;
///
/// let mut s = "Per Martin-Löf".to_string();
///
/// let (first, last) = s.split_at_mut(3);
///
/// assert_eq!("Per", first);
/// assert_eq!(" Martin-Löf", last);
/// {
/// let (first, last) = s.split_at_mut(3);
/// first.make_ascii_uppercase();
/// assert_eq!("PER", first);
/// assert_eq!(" Martin-Löf", last);
/// }
/// assert_eq!("PER Martin-Löf", s);
/// ```
#[inline]
#[stable(feature = "str_split_at", since = "1.4.0")]