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@@ -206,12 +206,6 @@ int_trait_impl!(Num for usize u8 u16 u32 u64 isize i8 i16 i32 i64);
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float_trait_impl!(Num for f32 f64);
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/// Defines an additive identity element for `Self`.
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-///
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-/// # Deriving
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-///
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-/// This trait can be automatically be derived using `#[deriving(Zero)]`
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-/// attribute. If you choose to use this, make sure that the laws outlined in
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-/// the documentation for `Zero::zero` still hold.
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pub trait Zero: Sized + Add<Self, Output = Self> {
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/// Returns the additive identity element of `Self`, `0`.
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///
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Homu