是否可以在C ++的成员初始化器列表中初始化数组? [英] Is it possible to initialize an array in a member initializer list in C++?

问题描述

所以，我有这个 Game 类，并且有一个 SDL_Rect s数组.如果可能的话，我想在成员初始值设定项列表中对其进行初始化，而不是在构造函数体内初始化数组.

So, I have this Game class, and I have an array of SDL_Rects. I would like to initialize it in the member initializer list if that's possible, instead of initializing the array inside the constructor body.

//Game.h
#pragma once

class Game {
public:
  Game(SDL_Window* window, SDL_Renderer* renderer);

private:
  SDL_Rect down[4];
};

// Game.cpp
#include "Game.h"

Game::Game(SDL_Window* window, SDL_Renderer* renderer){
  down[0] = {1,4,31,48};
  down[1] = {35,5,25,47};
  down[2] = {65,4,31,48};
  down[3] = {100,5,26,47};
}

我想做这样的事情:

// Game.cpp
Game::Game()
: down[0]({1,4,31,48};
  // etc, etc...
{}

推荐答案

您可以使用成员变量的直接列表初始化(自c ++ 11开始).(不是数组的每个元素.)

You could use direct-list-initialization (since c++11) for the member variable. (Not every element of the array.)

Game::Game()
: down {{1,4,31,48}, {35,5,25,47}, {65,4,31,48}, {100,5,26,47}}
{}

实时

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