diff options
Diffstat (limited to 'src/liballoc/string.rs')
| -rw-r--r-- | src/liballoc/string.rs | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/liballoc/string.rs b/src/liballoc/string.rs index da9afdd2ca3..449e3152d8f 100644 --- a/src/liballoc/string.rs +++ b/src/liballoc/string.rs @@ -2240,6 +2240,14 @@ impl<'a> From<String> for Cow<'a, str> { } } +#[stable(feature = "cow_from_string_ref", since = "1.28.0")] +impl<'a> From<&'a String> for Cow<'a, str> { + #[inline] + fn from(s: &'a String) -> Cow<'a, str> { + Cow::Borrowed(s.as_str()) + } +} + #[stable(feature = "cow_str_from_iter", since = "1.12.0")] impl<'a> FromIterator<char> for Cow<'a, str> { fn from_iter<I: IntoIterator<Item = char>>(it: I) -> Cow<'a, str> { |