misc.h

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#pragma once
 
#include <algorithm>
#include <utility>
 
namespace alfi::util::misc {
    template <typename Function>
    class SimpleScopeGuard {
    public:
        // ReSharper disable once CppNonExplicitConvertingConstructor
        SimpleScopeGuard(Function on_exit) : _on_exit(std::move(on_exit)) {} // NOLINT(*-explicit-constructor)
        ~SimpleScopeGuard() noexcept { _on_exit(); }
        SimpleScopeGuard(const SimpleScopeGuard&) = delete;
        SimpleScopeGuard& operator=(const SimpleScopeGuard&) = delete;
    private:
        Function _on_exit;
    };
 
    template <typename... Ts>
    struct overload : Ts... {
        using Ts::operator()...;
    };
    template <typename... Ts>
    overload(Ts...) -> overload<Ts...>;
 
    template <typename Iterator, typename T>
    Iterator first_leq_or_begin(Iterator begin, Iterator end, const T& value) {
        auto iter = std::lower_bound(begin, end - 1, value);
        if (iter != begin && *iter > value) {
            --iter;
        }
        return iter;
    }
}