diff options
Diffstat (limited to 'src/lib.rs')
-rw-r--r-- | src/lib.rs | 39 |
1 files changed, 39 insertions, 0 deletions
@@ -38,3 +38,42 @@ impl<F, T, E> ResultInspectRef<F, T> for Result<T, E> } } } + + +pub trait ResultInspectErr<F, E> + where F: FnOnce(&E), + E: Sized +{ + fn inspect_err(self, f: F) -> Self; +} + +pub trait ResultInspectErrRef<F, E> + where F: FnOnce(&E), + E: Sized +{ + fn inspect_err(&self, f: F); +} + +impl<F, T, E> ResultInspectErr<F, E> for Result<T, E> + where F: FnOnce(&E), + E: Sized +{ + fn inspect_err(self, f: F) -> Self { + if let Err(ref e) = self.as_ref() { + (f)(&e); + } + + self + } +} + +impl<F, T, E> ResultInspectErrRef<F, E> for Result<T, E> + where F: FnOnce(&E), + E: Sized +{ + fn inspect_err(&self, f: F) { + if let Err(ref e) = self { + (f)(&e); + } + } +} |