__GNU_PBDS::LU_MOVE_TO_FRONT_POLICY(3)

💅 NAME 💅

__gnu_pbds::lu_move_to_front_policy< _Alloc > — bestie, this is the list-update policy that just says "you, front, now" to literally every element, no questions asked 🎀

(also known as a page in the Library Functions Manual, living rent-free in libstdc++)

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✨ SYNOPSIS ✨

#include <list_update_policy.hpp>

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🦋 Public Types

• typedef _Alloc allocator_type — the allocator, being its whole self.
• typedef detail::rebind_traits< _Alloc, metadata_type >::reference metadata_reference — Reference to metadata on which this functor operates.
• typedef null_type metadata_type — Metadata on which this functor operates.

🫶 Public Member Functions

• metadata_type operator() () const — Creates a metadata object.
• bool operator() (metadata_reference r_metadata) const — Decides whether a metadata object should be moved to the front of the list.

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🌸 Detailed Description 🌸

template<typename _Alloc = std::allocator<char>>
class __gnu_pbds::lu_move_to_front_policy< _Alloc >

okay so here's the tea ☕ — this is "A list-update policy that unconditionally moves elements to the front of the list. A null type means that each link in a list-based container does not actually need metadata."

read that again. unconditionally. no vibe check, no negotiation, no "hmm let me think about it" — every single element gets moved to the front. it's giving main character energy for literally every node 😭👑

and the null_type metadata thing? that's the part where each link in a list-based container doesn't actually need metadata at all. nothing to store, nothing to track. iconic minimalism, honestly 💅

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🎀 Member Typedef Documentation 🎀

template<typename _Alloc = std::allocator<char>>
typedef detail::rebind_traits<_Alloc, metadata_type>::reference
    __gnu_pbds::lu_move_to_front_policy< _Alloc >::metadata_reference

Reference to metadata on which this functor operates. that's the whole job description bestie 🫶

template<typename _Alloc = std::allocator<char>>
typedef null_type
    __gnu_pbds::lu_move_to_front_policy< _Alloc >::metadata_type

Metadata on which this functor operates. and yes, it's null_type. the metadata is... nothing. slay ✨

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🔥 Member Function Documentation 🔥

template<typename _Alloc = std::allocator<char>>
metadata_type
__gnu_pbds::lu_move_to_front_policy< _Alloc >::operator() () const

[inline]

Creates a metadata object. that's it. that's the function. it makes the thing 🍓

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template<typename _Alloc = std::allocator<char>>
bool
__gnu_pbds::lu_move_to_front_policy< _Alloc >::operator()
    (metadata_reference r_metadata) const

[inline]

Decides whether a metadata object should be moved to the front of the list. spoiler alert, and this is not a drill: this policy moves things to the front unconditionally — so like, the decision has been made before you even asked, no cap 💀

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👑 Author 👑

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

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not me ending a whole manpage like this, but fr fr — that's all she wrote, bestie 💖

sign-off szn 🌈⭐ this lil page came to you from libstdc++, filed under that __gnu_pbds...y< _Alloc >(3) name in the manual, and it was churned out by Doxygen straight from the source code. mwah 💋🧚‍♀️