diff options
| -rw-r--r-- | library/core/src/char/methods.rs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/library/core/src/char/methods.rs b/library/core/src/char/methods.rs index 9c667edb476..206bbf5690e 100644 --- a/library/core/src/char/methods.rs +++ b/library/core/src/char/methods.rs @@ -320,8 +320,9 @@ impl char { /// '1'.is_digit(37); /// ``` #[stable(feature = "rust1", since = "1.0.0")] + #[rustc_const_unstable(feature = "const_char_is_digit", issue = "132241")] #[inline] - pub fn is_digit(self, radix: u32) -> bool { + pub const fn is_digit(self, radix: u32) -> bool { self.to_digit(radix).is_some() } |