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This article mainly shows you "how to use the imitating function in C++". The content is simple and clear. I hope it can help you solve your doubts. Now let the editor lead you to study and learn the article "how to use the imitating function in C++".

First, problems

Consider a simple example: suppose you have a vector, and your task is to count the number of string whose length is less than 5. If you use the count_if function, your code may look like this:

/ / count the number of string whose length is less than 5 bool LengthIsLessThanFive (const string& str) {return str.length ()

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