other/y_combinator.hpp

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• Last update: 2025-12-02 19:33:27+07:00
• Include: #include "other/y_combinator.hpp"

Required by

• Block Cut Tree (graph/block_cut.hpp)
• Static Top Tree (tree/static_top_tree.hpp)

Verified with

• test/yosupo/graph/biconnected_components.test.cpp
• test/yosupo/tree/point_set_tree_path_composite_sum_fixed_root.test.cpp

Code

#pragma once

template<class F> struct y_comb_t : F {
    template<class T> y_comb_t(T &&_f) : F(forward<T>(_f)) {}
    template<class... Args> decltype(auto) operator()(Args &&...args) {
        return F::operator()(/* ref */(*this), forward<Args>(args)...);
    }
};
template<class F> y_comb_t<decay_t<F>> y_comb(F &&f) { return {forward<F>(f)}; }

#line 2 "other/y_combinator.hpp"

template<class F> struct y_comb_t : F {
    template<class T> y_comb_t(T &&_f) : F(forward<T>(_f)) {}
    template<class... Args> decltype(auto) operator()(Args &&...args) {
        return F::operator()(/* ref */(*this), forward<Args>(args)...);
    }
};
template<class F> y_comb_t<decay_t<F>> y_comb(F &&f) { return {forward<F>(f)}; }

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