[Issue 5251] Const C file

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5251



--- Comment #4 from bearophile_hugs at eml.cc 2010-11-22 10:16:12 PST ---
(In reply to comment #3)
> const is transitive, so if you imagine a FILE having this structure:
> 
> struct FILE
> {
>    int fd;
>    ubyte[] buffer;
> }
> 
> Now, if FILE is const, then buffer is const(ubyte[]), so how does fprintf write
> to that buffer?
> 
> What you are looking for is head-const (the variable cannot change, but
> everything it points to can), which has some good uses, but does not exist in
> D.

I understand, you are right, thank you.

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