__GNU_PBDS::QUADRATIC_PROBE_FN(3)

πŸ“¦
version 16.2.1+r23+gd564253eb6c8 Β· 5 versions
, in arch rolling, centos-stream 10, fedora 43, fedora 44

πŸ’– __gnu_pbds::quadratic_probe_fn< Size_Type > πŸ’–

okay bestie, welcome to the libstdc++ manual β€” this one lives in the Library Functions Manual section, and yes it's the __gnu_pbds::quadratic_probe_fn< Size_Type > page. buckle up, it's short but it's ✨important✨.


🌸 NAME 🌸

__gnu_pbds::quadratic_probe_fn< Size_Type > β€” a probe sequence policy that uses square increments. that's it, that's the whole vibe. it tells a hash table where to look next when the first spot is taken. no cap.


πŸ¦‹ SYNOPSIS πŸ¦‹

#include <hash_policy.hpp>

⭐ Public Types

  • typedef Size_Type size_type

πŸ’… Public Member Functions

  • void swap (quadratic_probe_fn< Size_Type > &other)

πŸ”’ Protected Member Functions

  • size_type operator() (size_type i) const
    • returns the i-th offset from the hash value. lowkey the whole point of the class.

🌈 Detailed Description 🌈

template<typename Size_Type = std::size_t>
class __gnu_pbds::quadratic_probe_fn< Size_Type >

"A probe sequence policy using square increments." πŸŽ€

that's the official tagline and honestly? iconic. it's giving "I make hashing go brrr by jumping in squares." if you're plugging this into a hash policy, this is the one that does the quadratic thing. periodt.


🧚 Member Function Documentation 🧚

template<typename Size_Type> quadratic_probe_fn< Size_Type >::size_type __gnu_pbds::quadratic_probe_fn< Size_Type >::operator() (size_type i) const [inline], [protected]

bestie, this is the one you actually care about. it returns the i-th offset from the hash value. πŸ’«

note the <purple>[inline]</purple> and <purple>[protected]</purple> tags β€” it's inline and it's protected, so it's doing its little job behind the scenes, not out here in the public API. iykyk.

πŸ‘‘ Author πŸ‘‘

generated automatically by Doxygen for libstdc++ from the source code. so like… nobody hand-wrote this one, the robots did it. πŸ€–πŸ’–


and that's the whole page, bestie! 🫢 this came to you from the libstdc++ squad β€” __gnu_pbds...Size_Type >(3), no date drama, just the manual. mwah πŸ’‹ go forth and probe quadratically βœ¨πŸŒˆπŸ’…

πŸ“¦ where this page comes from
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