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This article introduces the knowledge of "what is the role of the inline keyword in C++". In the operation of practical cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Inline keyword: purpose:

In order to solve the problem that some small functions that are called frequently consume a lot of stack space (stack memory).

Principle:

When calling a function, you directly take the code of the function over and reuse it, instead of pressing the stack and off the stack all the time.

Note:

The function in the class is inline by default, but if the definition of the class is implemented outside the class, it is not inline at this time. If you need to add inline, you need to add the inline keyword before the function definition. Inline must be placed before the function definition, and inline should not be used carefully before the declaration, because this method replaces the stack space with the amount of code.

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