Function specialization

[rust-highfive]

Issue by jensnockert
Tuesday Jun 11, 2013 at 13:58 GMT

For earlier discussion, see rust-lang/rust#7059

This issue was labelled with: B-RFC in the Rust repository

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Code like this should work, preferably picking the most specialized function (and/or just picking a random one, or the first that matches &c. or just throw a warning)

pub fn abs<T: Signed>(value: T) -> T { value.abs() }
pub fn abs<T: Ord + Zero + Neg<T>>(v: T) -> T { if v < Zero::zero() { v.neg() } else { v } }

[nikomatsakis]

This issue is subsumed by the more general #1053, so I'm going to close it.