#pragma once
#include <memory>
#include <vector>


template<class T, class... Args>
std::unique_ptr<T> make_unique_nothrow(Args &&...args) noexcept(noexcept(T(std::forward<Args>(args)...))) {
    return std::unique_ptr<T>(new (std::nothrow) T(std::forward<Args>(args)...));
}

template<typename T>
inline typename std::unique_ptr<T> make_unique_nothrow(size_t num) noexcept {
    return std::unique_ptr<T>(new (std::nothrow) std::remove_extent_t<T>[num]());
}

template<class T, class... Args>
std::shared_ptr<T> make_shared_nothrow(Args &&...args) noexcept(noexcept(T(std::forward<Args>(args)...))) {
    return std::shared_ptr<T>(new (std::nothrow) T(std::forward<Args>(args)...));
}

template<typename T, class Allocator, class Predicate>
bool remove_first_if(std::vector<T, Allocator> &list, Predicate pred) {
    auto it = list.begin();
    while (it != list.end()) {
        if (pred(*it)) {
            list.erase(it);
            return true;
        }
        it++;
    }
    return false;
}