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'if consteval' in C++20 - A Better Alternative to is_constant_evaluated()

  • When using constexpr and consteval in C++, developers may encounter limitations when evaluating conditions at compile-time.
  • is_constant_evaluated() is commonly used to differentiate between compile-time and runtime code, but it fails in certain scenarios due to the static analysis performed by the compiler.
  • The if consteval construct is introduced as a better alternative to is_constant_evaluated() in C++.
  • With if consteval, the compiler can accurately determine which code branches will execute at compile-time, providing a cleaner and safer approach to compile-time evaluation.

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