specialize ToString for str
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@ -48,6 +48,7 @@
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#![feature(placement_new_protocol)]
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#![feature(shared)]
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#![feature(slice_patterns)]
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#![feature(specialization)]
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#![feature(staged_api)]
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#![feature(step_by)]
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#![feature(str_char)]
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@ -1770,7 +1770,7 @@ pub trait ToString {
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#[stable(feature = "rust1", since = "1.0.0")]
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impl<T: fmt::Display + ?Sized> ToString for T {
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#[inline]
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fn to_string(&self) -> String {
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default fn to_string(&self) -> String {
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use core::fmt::Write;
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let mut buf = String::new();
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let _ = buf.write_fmt(format_args!("{}", self));
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@ -1779,6 +1779,14 @@ impl<T: fmt::Display + ?Sized> ToString for T {
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}
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}
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#[stable(feature = "str_to_string_specialization", since = "1.9.0")]
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impl ToString for str {
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#[inline]
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fn to_string(&self) -> String {
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String::from(self)
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}
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}
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#[stable(feature = "rust1", since = "1.0.0")]
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impl AsRef<str> for String {
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#[inline]
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