build error with c++ - ‘find_if’ is not a member of ‘std'

Question

While building a project, I get this cryptic error:

'find_if' is not a member of 'std'

find_if() is used this way: std::find_if(...).

Any idea where it could come from ?

Answer 1

add the inclusion:

#include <algorithm>

to your implementation file.

Answer 2

包含<algorithm>头文件：

#include <algorithm>

Answer 3

你有没有标题？

#include <algorithm> 

Answer 4

你需要#include <algorithm>