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str: Add method .into_owned(self) -> ~str to Str #8204

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str: Add method .into_owned(self) -> ~str to Str #8204

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12 changes: 12 additions & 0 deletions src/libstd/str.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1079,25 +1079,37 @@ pub mod traits {}
pub trait Str {
/// Work with `self` as a slice.
fn as_slice<'a>(&'a self) -> &'a str;

/// Convert `self` into a ~str.
fn into_owned(self) -> ~str;
}

impl<'self> Str for &'self str {
#[inline]
fn as_slice<'a>(&'a self) -> &'a str { *self }

#[inline]
fn into_owned(self) -> ~str { self.to_owned() }
}

impl<'self> Str for ~str {
#[inline]
fn as_slice<'a>(&'a self) -> &'a str {
let s: &'a str = *self; s
}

#[inline]
fn into_owned(self) -> ~str { self }
}

impl<'self> Str for @str {
#[inline]
fn as_slice<'a>(&'a self) -> &'a str {
let s: &'a str = *self; s
}

#[inline]
fn into_owned(self) -> ~str { self.to_owned() }
}

impl<'self> Container for &'self str {
Expand Down