__gnu_pbds...ize_policy(3)

📦
version 16.2.1+r23+gd564253eb6c8 · 5 versions
, in arch rolling, centos-stream 10, fedora 43, fedora 44

💖 NAME 💖

__gnu_pbds::hash_prime_size_policy — okay bestie, so this is a size policy whose sequence of sizes forms a nearly-exponential sequence of primes. that's it, that's the whole gig. ✨

(this is straight out of the Library Functions Manual, we're in the libstdc++ extended containers cinematic universe 🎀)

🌸 SYNOPSIS 🌸

#include <hash_policy.hpp>

🦋 Public Types

  • typedef std::size_t size_type — literally just the Size type. yes queen, size type. 💅

🫶 Public Member Functions

  • hash_prime_size_policy (size_type start_size=8) — the Default constructor, or constructor taking a start_size. The policy will use the sequence of sizes approximately start_size, start_size* 2, start_size* 2^2, ... and so on forever, iconic behaviour fr fr 🔥
  • void swap (hash_prime_size_policy &other) — swaps with other, no drama, no notes.

🙈 Protected Member Functions

  • size_type get_nearest_larger_size (size_type size) const
  • size_type get_nearest_smaller_size (size_type size) const
these two are protected, meaning they're giving backstage-pass energy — not for just anyone to call 👑

⭐ Detailed Description ⭐

A size policy whose sequence of sizes form a nearly-exponential sequence of primes.

like. it grows big. exponentially-ish. and the sizes are primes. the way that it just does that?? obsessed. 🌈

🎀 Member Typedef Documentation 🎀

typedef std::size_t __gnu_pbds::hash_prime_size_policy::size_type

Size type. that's the note. size. type. periodt. 💜

✨ Constructor & Destructor Documentation ✨

__gnu_pbds::hash_prime_size_policy::hash_prime_size_policy (size_type start_size = 8) [inline]

Default constructor, or onstructor taking a start_size. The policy will use the sequence of sizes approximately start_size, start_size* 2, start_size* 2^2, ...

so like — you pass in start_size, and then it's giving start_size, start_size*2, start_size*2^2, ... all the way up. mathematically unbothered. no cap. 🧚

(and yeah, the original doc says "onstructor" — we're keeping that typo exactly as-is because we respect the source, and honestly? it ate. 💀)

👑 Author 👑

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

so yeah bestie, that's the whole page 💖 generated automatically by Doxygen for libstdc++ straight from the source code, and this lil manual came from the libstdc++ crew — go slay with your prime sizes, ily, bye! 🫶🌸

📦 where this page comes from
  • arch rolling: gcc 16.2.1+r23+gd564253eb6c8-1 · GPL-3.0-or-later WITH GCC-exception-3.1 AND GFDL-1.3-or-later
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  • centos-stream 10: libstdc++-docs 14.4.1-4.el10 · GPL-3.0-or-later AND LGPL-3.0-or-later AND (GPL-3.0-or-later WITH GCC-exception-3.1) AND (GPL-3.0-or-later WITH Texinfo-exception) AND (LGPL-2.1-or-later WITH GCC-exception-2.0) AND (GPL-2.0-or-later WITH GCC-exception-2.0) AND (GPL-2.0-or-later WITH GNU-compiler-exception) AND BSL-1.0 AND GFDL-1.3-or-later AND Linux-man-pages-copyleft-2-para AND SunPro AND BSD-1-Clause AND BSD-2-Clause AND BSD-2-Clause-Views AND BSD-3-Clause AND BSD-4-Clause AND BSD-Source-Code AND Zlib AND MIT AND Apache-2.0 AND (Apache-2.0 WITH LLVM-Exception) AND ZPL-2.1 AND ISC AND LicenseRef-Fedora-Public-Domain AND HP-1986 AND curl AND Martin-Birgmeier AND HPND-Markus-Kuhn AND dtoa AND SMLNJ AND AMD-newlib AND OAR AND HPND-merchantability-variant AND HPND-Intel
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  • fedora 43: libstdc++-docs 15.3.1-1.fc43 · GPL-3.0-or-later AND LGPL-3.0-or-later AND (GPL-3.0-or-later WITH GCC-exception-3.1) AND (GPL-3.0-or-later WITH Texinfo-exception) AND (LGPL-2.1-or-later WITH GCC-exception-2.0) AND (GPL-2.0-or-later WITH GCC-exception-2.0) AND (GPL-2.0-or-later WITH GNU-compiler-exception) AND BSL-1.0 AND GFDL-1.3-or-later AND Linux-man-pages-copyleft-2-para AND SunPro AND BSD-1-Clause AND BSD-2-Clause AND BSD-2-Clause-Views AND BSD-3-Clause AND BSD-4-Clause AND BSD-Source-Code AND Zlib AND MIT AND Apache-2.0 AND (Apache-2.0 WITH LLVM-Exception) AND ZPL-2.1 AND ISC AND LicenseRef-Fedora-Public-Domain AND HP-1986 AND curl AND Martin-Birgmeier AND HPND-Markus-Kuhn AND dtoa AND SMLNJ AND AMD-newlib AND OAR AND HPND-merchantability-variant AND HPND-Intel
  • fedora 44: libstdc++-docs 16.0.1-0.10.fc44 · GPL-3.0-or-later AND LGPL-3.0-or-later AND (GPL-3.0-or-later WITH GCC-exception-3.1) AND (GPL-3.0-or-later WITH Texinfo-exception) AND (LGPL-2.1-or-later WITH GCC-exception-2.0) AND (GPL-2.0-or-later WITH GCC-exception-2.0) AND (GPL-2.0-or-later WITH GNU-compiler-exception) AND BSL-1.0 AND GFDL-1.3-or-later AND Linux-man-pages-copyleft-2-para AND SunPro AND BSD-1-Clause AND BSD-2-Clause AND BSD-2-Clause-Views AND BSD-3-Clause AND BSD-4-Clause AND BSD-Source-Code AND Zlib AND MIT AND Apache-2.0 AND (Apache-2.0 WITH LLVM-Exception) AND ZPL-2.1 AND ISC AND LicenseRef-Fedora-Public-Domain AND HP-1986 AND curl AND Martin-Birgmeier AND HPND-Markus-Kuhn AND dtoa AND SMLNJ AND AMD-newlib AND OAR AND HPND-merchantability-variant AND HPND-Intel
  • fedora 44: libstdc++-docs 16.2.1-2.fc44
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