45d493b680
That type trait represents whether move-assigning an object is equivalent to destroying it and then move-constructing a new one from the same argument. This will be useful in a few places where we may want to destroy + construct instead of doing an assignment, in particular when implementing some container operations in terms of relocation. This is effectively adding a library emulation of P2786R12's is_replaceable trait, similarly to what we do for trivial relocation. Eventually, we can replace this library emulation by the real compiler-backed trait. This is building towards #129328.
72 KiB
72 KiB