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demonstrate RHS != Self use cases for Add and Sub #35793

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Merged
merged 2 commits into from
Sep 3, 2016
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demonstrate RHS != Self use cases for Add and Sub #35793

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89f7e92
demonstrate `RHS != Self` use cases for `Add` and `Sub`
matthew-piziak Aug 18, 2016
9a400f0
replace `../` with `../../std/` to support `core` docs
matthew-piziak Aug 31, 2016
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12 changes: 12 additions & 0 deletions src/libcore/ops.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -212,6 +212,12 @@ macro_rules! forward_ref_binop {
/// Point { x: 3, y: 3 });
/// }
/// ```
///
/// Note that `RHS = Self` by default, but this is not mandatory. For example,
/// [std::time::SystemTime] implements `Add<Duration>`, which permits
/// operations of the form `SystemTime = SystemTime + Duration`.
///
/// [std::time::SystemTime]: ../../std/time/struct.SystemTime.html
#[lang = "add"]
#[stable(feature = "rust1", since = "1.0.0")]
pub trait Add<RHS=Self> {
Expand Down Expand Up @@ -279,6 +285,12 @@ add_impl! { usize u8 u16 u32 u64 isize i8 i16 i32 i64 f32 f64 }
/// Point { x: 1, y: 0 });
/// }
/// ```
///
/// Note that `RHS = Self` by default, but this is not mandatory. For example,
/// [std::time::SystemTime] implements `Sub<Duration>`, which permits
/// operations of the form `SystemTime = SystemTime - Duration`.
///
/// [std::time::SystemTime]: ../../std/time/struct.SystemTime.html
#[lang = "sub"]
#[stable(feature = "rust1", since = "1.0.0")]
pub trait Sub<RHS=Self> {
Expand Down