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Update src/borrow_check/region_inference/member_constraints.md 

Co-Authored-By: lqd <remy.rakic+github@gmail.com>
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Niko Matsakis 2019-06-24 14:34:32 -04:00 committed by Who? Me?!
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src/borrow_check/region_inference/member_constraints.md
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A member constraint `'m member of ['c_1..'c_N]` expresses that the A member constraint `'m member of ['c_1..'c_N]` expresses that the
region `'m` must be *equal* to some **choice regions** `'c_i` (for region `'m` must be *equal* to some **choice regions** `'c_i` (for
some `i`). These constraints cannot be expressed by users, but they some `i`). These constraints cannot be expressed by users, but they
arise from `impl Trait` due to its lifetime capture rules. Consinder a arise from `impl Trait` due to its lifetime capture rules. Consider a
function such as the following: function such as the following:
```rust ```rust