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问题描述
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再次使用向量.我希望我不会太烦人.我有一个这样的结构:
Again me with vectors. I hope I'm not too annoying. I have a struct like this :
struct monster
{
DWORD id;
int x;
int y;
int distance;
int HP;
};
所以我创建了一个向量:
So I created a vector :
std::vector<monster> monsters;
但现在我不知道如何搜索向量.我想在向量中找到怪物的 ID.
But now I don't know how to search through the vector. I want to find an ID of the monster inside the vector.
DWORD monster = 0xFFFAAA;
it = std::find(bot.monsters.begin(), bot.monsters.end(), currentMonster);
但显然它不起作用.我只想遍历结构的 .id 元素,但我不知道该怎么做.非常感谢帮助.谢谢!
But obviously it doesn't work. I want to iterate only through the .id element of the struct, and I don't know how to do that. Help is greatly appreciated. Thanks !
推荐答案
std::find_if
:
it = std::find_if(bot.monsters.begin(), bot.monsters.end(),
boost::bind(&monster::id, _1) == currentMonster);
如果没有boost,也可以编写自己的函数对象.看起来像这样
Or write your own function object if you don't have boost. Would look like this
struct find_id : std::unary_function<monster, bool> {
DWORD id;
find_id(DWORD id):id(id) { }
bool operator()(monster const& m) const {
return m.id == id;
}
};
it = std::find_if(bot.monsters.begin(), bot.monsters.end(),
find_id(currentMonster));
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