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static functions, declaration/defintion

Started by the_cyberlord Dec 23, 2004 at 1:07 PM 5 replies 1.1k views

Original Post

Dec 23, 2004 at 1:07 PM

Why does this give a compiler error ?? Or am I misunderstanding the whole concept of static functions? header.h -------- static void somefunction(void); body.cpp -------- #include "header.h" static void somefunction(void) { blabla(); }

microdot

Dec 23, 2004 at 1:22 PM

What is the error specically?

Jingo

Dec 23, 2004 at 1:23 PM

Remove the static from the definition. static functions have internal linkage, they cannot be accessed from other translation units.

the_cyberlord

Author

the_cyberlord

Dec 23, 2004 at 1:42 PM

Ow, so I'll never be able to put static functions in a seperate file, and use them in my main file?

doynax

Dec 23, 2004 at 1:44 PM

Quote:
Original post by the_cyberlord
Ow, so I'll never be able to put static functions in a seperate file, and use them in my main file?

Yes, that's the whole point. You can use them to avoid naming collisions and allow the compiler to optimize slightly better (no need to export a generic version so the functions that wouldn't normally be inlined can be adapted to the current compilation unit). Another popular use is as a standard compliant substitute for inlined functions in C.
So why did you want to use one in the first place?

doynax

Dec 23, 2004 at 2:46 PM

Quote:
Original post by Anonymous Poster
Eh, for the speed...

Try inline instead, if it's a short function and you really need the speed boost.

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