On Thursday, 4 September 2014 at 09:54:57 UTC, nikki wrote:
thanks! just what I needed, with some stumbling I managed to
get everything working as intended: using a pointer variable to
save an adres of a function, then dereferencing to use it.
Now I am wondering when to use the ** ?
for example I found this function over at
https://github.com/d-gamedev-team/gfm/blob/master/core/gfm/core/memory.d
void* storeRawPointerAndReturnAligned(void* raw, size_t
alignment) nothrow
{
enum size_t pointerSize = size_t.sizeof;
char* start = cast(char*)raw + pointerSize;
void* aligned = nextAlignedPointer(start, alignment);
void** rawLocation = cast(void**)(cast(char*)aligned -
pointerSize);
*rawLocation = raw;
return aligned;
}
it's a little over my head yet..
void** (double ptr) is a pointer to array of pointers(just
imagine a crossword where each horizontal letter is part of
vertical word) there is little reason to use them in D, mostly to
C/C++ interfacing
