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Diffstat (limited to 'src/liballoc/string.rs')
| -rw-r--r-- | src/liballoc/string.rs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/liballoc/string.rs b/src/liballoc/string.rs index 0e48f1548e6..7c89d38caa4 100644 --- a/src/liballoc/string.rs +++ b/src/liballoc/string.rs @@ -1461,6 +1461,7 @@ impl String { /// ``` #[inline] #[stable(feature = "string_split_off", since = "1.16.0")] + #[must_use = "use `.truncate()` if you don't need the other half"] pub fn split_off(&mut self, at: usize) -> String { assert!(self.is_char_boundary(at)); let other = self.vec.split_off(at); |