Use string_view instead of const string&. #1134
Merged
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std::string_view
is a non-owning read-only view of a string, and it helps to avoid unnecessary memory allocations [1]. I think we should start using it instead ofconst std::string&
.[1] https://www.modernescpp.com/index.php/c-17-avoid-copying-with-std-string-view/