Can you inline static member functions?

Question

I have a static member function which is merely syntactic sugar for me and I would like its body to appear in place of going through the motions of passing parameters to it. Will

inline static foo(int a) {return a & 0x00000040;}

be inlined just as it would if it was inline without being static?

As with any inlining, the answer is "it depends". What if you want to pass a function pointer to foo somewhere? — Kerrek SB
– Kerrek SB, Commented Feb 11, 2012 at 22:35

Seth Carnegie · Accepted Answer · 2012-02-11 22:46:44Z

22

The compiler chooses what it wants to do so we can't say what it will choose to do. That said, the function being static will not prevent it from being inlined; static functions are basically free functions with a different naming style and access to the class' private members.

edited Feb 11, 2012 at 22:46

answered Feb 11, 2012 at 22:35

Seth Carnegie

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3 Comments

John Over a year ago

They differ from free functions in one important respect: access to private members

Seth Carnegie Over a year ago

@John ah yes, that is an important difference.

user2379628 Over a year ago

Doesn't a definition inside the class imply a request to inline anyway?

Benjamin W. · Accepted Answer · 2016-01-29 04:39:01Z

A static member method has no this parameter, and can therefore only access static member variables.

It is distinct from whether the method is inlined or not. So the two are independent of each other.

The compiler decides if a method is going to be inlined or not. Your use of the keyword is merely a hint to the compiler.

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