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Make fmt::Arguments::as_str unstably const

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This commit is contained in:
Jonas Schievink 2021-06-27 03:54:06 +02:00
parent a1411de9de
commit b3fbfe474b
1 changed files with 2 additions and 1 deletions
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3
library/core/src/fmt/mod.rs
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@ -444,8 +444,9 @@ impl<'a> Arguments<'a> {
/// assert_eq!(format_args!("{}", 1).as_str(), None);
/// ```
#[stable(feature = "fmt_as_str", since = "1.52.0")]
#[rustc_const_unstable(feature = "const_arguments_as_str", issue = "none")]
#[inline]
pub fn as_str(&self) -> Option<&'static str> {
pub const fn as_str(&self) -> Option<&'static str> {
match (self.pieces, self.args) {
([], []) => Some(""),
([s], []) => Some(s),