IPC_NOWAIT

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
  1. auto IPC_NOWAIT;
  2. auto IPC_NOWAIT;
  3. auto IPC_NOWAIT;
    version(!linux && !darwin && !FreeBSD && solaris)
    extern (C) const
    auto IPC_NOWAIT = octal!4000;

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