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Rollup merge of #33023 - tbu-:pr_wrapping_traits, r=alexcrichton

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Implement `Display` and `Hash` for `std::num::Wrapping`

Also, change the `Debug` implementation to only show the inner value.

Fixes #33006.
This commit is contained in:
Manish Goregaokar 2016-04-17 17:50:34 +05:30
commit 5fc8065ef2
1 changed files with 15 additions and 1 deletions
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16
src/libcore/num/mod.rs
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@ -38,9 +38,23 @@ use slice::SliceExt;
/// all standard arithmetic operations on the underlying value are
/// intended to have wrapping semantics.
#[stable(feature = "rust1", since = "1.0.0")]
#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Debug, Default)]
#[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Default, Hash)]
pub struct Wrapping<T>(#[stable(feature = "rust1", since = "1.0.0")] pub T);
#[stable(feature = "rust1", since = "1.0.0")]
impl<T: fmt::Debug> fmt::Debug for Wrapping<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.0.fmt(f)
}
}
#[stable(feature = "wrapping_display", since = "1.10.0")]
impl<T: fmt::Display> fmt::Display for Wrapping<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.0.fmt(f)
}
}
mod wrapping;
// All these modules are technically private and only exposed for libcoretest: