std::permutable(3cxx)

✨ NAME ✨

std::permutable — [alg.req.permutable], concept permutable

okay so bestie, we're in the std::permutable(3cxx) page from the libstdc++ manual, and this one is literally just a concept. no cap. it's giving "short and iconic."

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🌸 SYNOPSIS 🌸

#include <iterator>

🎀 Concept definition 🎀

template<typename _Iter>
concept std::permutable =  forward_iterator<_Iter>
      && indirectly_movable_storable<_Iter, _Iter>
      && indirectly_swappable<_Iter, _Iter>

so std::permutable is satisfied when all three of those hold for _Iter, in order:

• forward_iterator<_Iter> — gotta be a forward iterator first, periodt 💅
• indirectly_movable_storable<_Iter, _Iter> — the elements need to be indirectly movable and storable across _Iter and itself
• indirectly_swappable<_Iter, _Iter> — and indirectly swappable across _Iter and itself

all three are chained with &&, so if any one of them isn't vibing, the whole concept does not pass the vibe check. 🙈

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💜 Detailed Description 💜

[alg.req.permutable], concept permutable

that's it, that's the whole description — it's a concept from the algorithms requirements section, and the library docs just point you back at the same name. short king energy. 👑

heads up: the synopsis above is the source of truth here. every requirement is spelled out character-for-character in that concept definition, so don't be out here guessing at extra behaviour, iykyk.

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🫶 Author 🫶

Generated automatically by Doxygen for libstdc++ from the source code.

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and that's a wrap, bestie! 🎀 this lil page was brought to you by libstdc++, with the author credit going to Doxygen, which generated it automatically straight from the source code. no human wrote the original, but I wrote this, so you're welcome. slay, stay permutable, and go read the source if you want the lore. 💖✨🦋