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Implement Zero for unit #8155

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stepancheg wants to merge 1 commit into from
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Implement Zero for unit #8155

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11 changes: 11 additions & 0 deletions src/libstd/nil.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,10 @@ Functions for the unit type.

#[cfg(not(test))]
use prelude::*;
#[cfg(not(test))]
use num::Zero;



#[cfg(not(test))]
impl Eq for () {
Expand Down Expand Up @@ -48,3 +52,10 @@ impl TotalEq for () {
#[inline]
fn equals(&self, _other: &()) -> bool { true }
}

#[cfg(not(test))]
impl Zero for () {
fn zero() -> () { () }
fn is_zero(&self) -> bool { true }
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@bstrie bstrie Aug 6, 2013

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Should these two functions be marked with #[inline]?

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@stepancheg stepancheg Aug 8, 2013

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@bstrie added in pull request #8404

}

1 change: 1 addition & 0 deletions src/test/run-pass/deriving-zero.rs
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Expand Up @@ -34,6 +34,7 @@ struct Lots {
h: ~[util::NonCopyable],
i: @mut (int, int),
j: bool,
k: (),
}

fn main() {
Expand Down