[libcxx-commits] [libcxx] [libc++] <algorithm>: __is_callable checks whether the callable can be called with rvalue (PR #73451)

[Nhat Nguyen via libcxx-commits]

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+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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changkhothuychung wrote:

@ldionne l
did you want to make the second operator `const &` ? I am getting errors, overloading either requires both functions to have ref-qualifiers or both lack. 

https://github.com/llvm/llvm-project/pull/73451