find_if与数据结构的向量 [英] find_if with vector of data structures

问题描述

如何将find_if与数据结构向量一起使用？


我有这样的东西：


struct Record {

int ID;

int Data1;

int Data2;

};


vector< Record> MyRecords;


我想根据ID找到记录。我应该使用find_if吗？我该怎么办？我知道如何使用简单数据类型的find_if但不知道如何编写在这种情况下检查条件的函数。


非常感谢您的回答。

How can I use find_if with vector of data structures?

I have something like this:

struct Record{
int ID;
int Data1;
int Data2;
};

vector<Record> MyRecords;


I would like to find a record based on ID. Should I use find_if and how can I do it? I know how to use find_if with simple data types but do not know how to write function that checks the condition in this case.

Thank you a lot for your answer.

推荐答案

如何将find_if与数据结构向量一起使用？


我有类似这样的事情：


struct Record {

int ID;

int Data1;

int Data2;

};


vector< Record> MyRecords;


我想根据ID找到记录。我应该使用find_if吗？我该怎么办？我知道如何使用简单数据类型的find_if但不知道如何编写在这种情况下检查条件的函数。


非常感谢您的回答。

How can I use find_if with vector of data structures?

I have something like this:

struct Record{
int ID;
int Data1;
int Data2;
};

vector<Record> MyRecords;


I would like to find a record based on ID. Should I use find_if and how can I do it? I know how to use find_if with simple data types but do not know how to write function that checks the condition in this case.

Thank you a lot for your answer.

你想做什么样的比较？

What kind of comparisons do you want to make?

什么你想做什么比较？

What kind of comparisons do you want to make?

我想基于给定的id找到记录，所以Record.ID == GivenID。

I would like to find record based on given id, so Record.ID==GivenID.

我想根据给定的id找到记录，所以Record.ID == GivenID。

I would like to find record based on given id, so Record.ID==GivenID.

编写自己的函数可能更好：

Maybe it''s better to write your own function:

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