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> I mean, it’s non-standard. What more do you need? so are most programming languages used in the world. In practice, #pragma once is less trouble than #ifdef

• groby_b 8y ago
  Nobody is proposing a non-standard language, that's the point. Literally the entire reason for having a coding standard is to have a well-defined subset of the language you're using. Meanwhile, the "trouble" the reddit thread comes up with is copy/paste programming for #ifdef. That's a one-time effort of writing a commit hook that checks for that. But no amount of effort will ensure the next compiler you need supports #pragma once
  • jcelerier 8y ago
    > Literally the entire reason for having a coding standard is to have a well-defined subset of the language you're using. that's a perversion of what "standards" means. Standards are originally there to codify existing practice, not to put new practice into existence. "#pragma once" is common enough that it has its own wikipedia page : https://en.wikipedia.org/wiki/Pragma_once https://en.wikipedia.org/wiki/Pragma_once with the list of all supported compilers.
• tdcbfdct3 8y ago
  "#pragma once" used to cause GCC to launch a game of Tetris instead of compiling your code. Not super relevant today, but a fun fact.
  • saagarjha 8y ago
    IIRC, it cycled through NetHack, Rogue, and Tower of Hanoi.