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Implement Show for &mut [T]

This commit is contained in:
Thomas Backman 2014-04-22 19:41:02 +02:00
parent 77303101bb
commit aa4bc89b17
1 changed files with 12 additions and 0 deletions
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12
src/libstd/slice.rs
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@ -2002,6 +2002,12 @@ impl<'a, T: fmt::Show> fmt::Show for &'a [T] {
} }
} }
impl<'a, T: fmt::Show> fmt::Show for &'a mut [T] {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.as_slice().fmt(f)
}
}
impl<T: fmt::Show> fmt::Show for ~[T] { impl<T: fmt::Show> fmt::Show for ~[T] {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.as_slice().fmt(f) self.as_slice().fmt(f)
@ -3408,6 +3414,12 @@ mod tests {
test_show_vec!(~[1], "[1]".to_owned()); test_show_vec!(~[1], "[1]".to_owned());
test_show_vec!(~[1, 2, 3], "[1, 2, 3]".to_owned()); test_show_vec!(~[1, 2, 3], "[1, 2, 3]".to_owned());
test_show_vec!(~[~[], ~[1u], ~[1u, 1u]], "[[], [1], [1, 1]]".to_owned()); test_show_vec!(~[~[], ~[1u], ~[1u, 1u]], "[[], [1], [1, 1]]".to_owned());
let empty_mut: &mut [int] = &mut[];
test_show_vec!(empty_mut, "[]".to_owned());
test_show_vec!(&mut[1], "[1]".to_owned());
test_show_vec!(&mut[1, 2, 3], "[1, 2, 3]".to_owned());
test_show_vec!(&mut[&mut[], &mut[1u], &mut[1u, 1u]], "[[], [1], [1, 1]]".to_owned());
} }
#[test] #[test]