Module rustc_middle::traits::select [−][src]
Expand description
Candidate selection. See the rustc dev guide for more information on how this works.
Structs
Indicates that trait evaluation caused overflow.
Enums
The result of trait evaluation. The order is important here as the evaluation of a list is the maximum of the evaluations.
The selection process begins by considering all impls, where
clauses, and so forth that might resolve an obligation. Sometimes
we’ll be able to say definitively that (e.g.) an impl does not
apply to the obligation: perhaps it is defined for usize but the
obligation is for i32. In that case, we drop the impl out of the
list. But the other cases are considered candidates.