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string: add is_transparent to transforming less comparator

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Danny Robson 2021-12-17 14:53:25 +10:00
parent 642d9b95c6
commit 0912f68844
1 changed files with 2 additions and 0 deletions
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string.hpp
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@ -350,6 +350,8 @@ namespace cruft::string {
return false; return false;
} }
using is_transparent = void;
template <typename A, typename B> template <typename A, typename B>
requires (!std::is_same_v<A,B>) requires (!std::is_same_v<A,B>)
bool operator() (A &&a, B &&b) const noexcept bool operator() (A &&a, B &&b) const noexcept