source: cpp/common/util-stl.h

// This file is a part of Framsticks SDK.  http://www.framsticks.com/
// Copyright (C) 1999-2023  Maciej Komosinski and Szymon Ulatowski.
// See LICENSE.txt for details.

#ifndef _UTIL_STL_H_
#define _UTIL_STL_H_

#include <map>
#include <algorithm>

template<typename T, std::size_t N> void push_back(vector<T>& v, T(&d)[N])
{
        for (unsigned int i = 0; i < N; i++)
                v.push_back(d[i]);
}

template<typename T> void push_back(vector<T>& to, const vector<T>& from)
{
        for (auto &e : from)
                to.push_back(e);
}

template<typename T> void erase(vector<T>& v, const T& e)
{
        typename vector<T>::iterator it = std::find(v.begin(), v.end(), e);
        if (it != v.end())
                v.erase(it);
}

template<typename T> void deleteVectorElements(vector<T*>& v)
{
        for (typename vector<T*>::iterator it = v.begin(); it != v.end(); it++)
                delete *it;
        v.clear();
}

template<typename T> int findIndex(vector<T>& v, const T& e)
{
        typename vector<T>::iterator it = find(v.begin(), v.end(), e);
        if (it != v.end())
                return int(&*it - &v.front());
        return -1;
}

template<typename Key, typename Value> Value mapValueOrDefault(const std::map<Key, Value> &map, const Key& key, const Value& default_value)
{
        auto found = map.find(key);
        if (found != map.end())
                return found->second;
        else
                return default_value;
}

template<class T> class DeletingVector  // deletes the elements (pointers) in destructor
{
public:
        std::vector<T*> vector;
        ~DeletingVector()
        {
                for (int i = (int)vector.size() - 1; i >= 0; i--)
                        delete vector[i];
        }
        T* operator[](int i) { return vector[i]; }
        int size() { return vector.size(); }
        void push_back(T* x) { vector.push_back(x); }
};

#endif