[C++] Replace std::is_same_v with std::same_as #50720
Description
Describe the enhancement requested
C++20 provides the concept std::same_as which can replace the type-trait std::is_same_v in many cases. This replacement should be considered for the arrow code-base
Component(s)
C++
Activity
[-]Replace `std::is_same_v` with `std::same_as`[/-][+][C++] Replace `std::is_same_v` with `std::same_as`[/+]goel-skd commentedon Aug 4, 2026
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apacheGH-50720: [C++] Replace std::is_same_v with std::same_as
dkp116 commentedon Sep 22, 2026
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