bors 2733b189ac auto merge of #9250 : erickt/rust/num, r=erickt ... This PR solves one of the pain points with c-style enums. Simplifies writing a fn to convert from an int/uint to an enum. It does this through a `#[deriving(FromPrimitive)]` syntax extension. Before this is committed though, we need to discuss if `ToPrimitive`/`FromPrimitive` has the right design (cc #4819). I've changed all the `.to_int()` and `from_int()` style functions to return `Option<int>` so we can handle partial functions. For this PR though only enums and `extra::num::bigint::*` take advantage of returning None for unrepresentable values. In the long run it'd be better if `i64.to_i8()` returned `None` if the value was too large, but I'll save this for a future PR. Closes #3868.		2013-10-05 14:26:44 -07:00
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common.rs	rustc: Use static strings in a few literals	2013-10-04 19:46:53 +02:00
ppaux.rs	std: Replace num::IntConvertible with {To,From}Primitive	2013-10-02 07:55:41 -07:00