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5878780e64
BTree: remove Ord bound from new
`K: Ord` bound is unnecessary on `BTree{Map,Set}::new` and their `Default` impl. No elements exist so there are nothing to compare anyway, so I don't think "future proof" would be a blocker here. This is analogous to `HashMap::new` not having a `K: Eq + Hash` bound.
#79245 originally does this and for some reason drops the change to `new` and `Default`. I can see why changes to other methods like `entry` or `symmetric_difference` need to be careful but I couldn't find out any reason not to do it on `new`.
Removing the bound also makes the stabilisation of `const fn new` not depending on const trait bounds.
cc `@steffahn` who suggests me to make this PR.
r? `@dtolnay`
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| vec | ||
| alloc.rs | ||
| borrow.rs | ||
| boxed.rs | ||
| fmt.rs | ||
| lib.rs | ||
| macros.rs | ||
| raw_vec.rs | ||
| rc.rs | ||
| slice.rs | ||
| str.rs | ||
| string.rs | ||
| sync.rs | ||
| task.rs | ||
| tests.rs | ||