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Added an example for std::str::into_boxed_bytes()

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This commit is contained in:
42triangles 2017-09-11 08:13:57 +02:00
parent e6bce95094
commit 833a9b567a
1 changed files with 11 additions and 0 deletions
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11
src/liballoc/str.rs
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@ -1783,6 +1783,17 @@ impl str {
} }
/// Converts a `Box<str>` into a `Box<[u8]>` without copying or allocating. /// Converts a `Box<str>` into a `Box<[u8]>` without copying or allocating.
///
/// # Examples
///
/// Basic usage:
///
/// ```
/// let s = "this is a string";
/// let boxed_str = s.to_owned().into_boxed_str();
/// let boxed_bytes = boxed_str.into_boxed_bytes();
/// assert_eq!(*boxed_bytes, *s.as_bytes());
/// ```
#[stable(feature = "str_box_extras", since = "1.20.0")] #[stable(feature = "str_box_extras", since = "1.20.0")]
pub fn into_boxed_bytes(self: Box<str>) -> Box<[u8]> { pub fn into_boxed_bytes(self: Box<str>) -> Box<[u8]> {
self.into() self.into()