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      C++ identifier with special meaning:pre(since C++26)

      From cppreference.com
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      pre
      (C++26)
       

      Contents

      [edit]Usage

      function contract specifier: as function precondition

      [edit]Notes

      Feature-test macroValueStdFeature
      __cpp_contracts202502L(C++26)Contracts

      [edit]Support status

      C++26 feature

             		Paper(s)

       
      GCC
      Clang
      MSVC
      Apple Clang
      EDG eccp
      Intel C++
      Nvidia HPC C++ (ex PGI)*
      Nvidia nvcc
      Cray


      Contracts  (FTM)*P2900R14

      [edit]See also

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