ira 83a9e16158 Replace many_for_each_mut with iter_many_mut. (#5402) ... # Objective Replace `many_for_each_mut` with `iter_many_mut` using the same tricks to avoid aliased mutability that `iter_combinations_mut` uses. <sub>I tried rebasing the draft PR I made for this before and it died. F</sub> ## Why `many_for_each_mut` is worse for a few reasons: 1. The closure prevents the use of `continue`, `break`, and `return` behaves like a limited `continue`. 2. rustfmt will crumple it and double the indentation when the line gets too long. ```rust query.many_for_each_mut( &entity_list, |(mut transform, velocity, mut component_c)| { // Double trouble. }, ); ``` 3. It is more surprising to have `many_for_each_mut` as a mutable counterpart to `iter_many` than `iter_many_mut`. 4. It required a separate unsafe fn; more unsafe code to maintain. 5. The `iter_many_mut` API matches the existing `iter_combinations_mut` API. Co-authored-by: devil-ira <justthecooldude@gmail.com>		2022-07-30 01:38:13 +00:00
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ui	Replace many_for_each_mut with iter_many_mut. (#5402)	2022-07-30 01:38:13 +00:00
ui.rs	Assert compiler errors for compile_fail tests (#3067)	2021-11-13 22:43:19 +00:00