On Wednesday, 26 July 2017 at 02:32:07 UTC, Adam D. Ruppe wrote:
I've hand rolled a function which is working for me currently,
but with my coding ability, I'd feel much safer with something
official :)
You could also do (cast(ubyte[]) array).length.
This was my (way over complicated) attempt at the same thing.
I'll blame my verbosity because I was trying to teach myself
about templates and constraints at the time :)
/+
There is a special type of array which acts as a wildcard that
can hold arrays of any kind, declared as void[]. The .length of
a void array is the length of the data in
bytes rather than the number of elements in its original type. "
+/
int arrayByteSize(T)(T someArray) if (isDynamicArray!(T))
{
ubyte[] arr = cast(ubyte[]) someArray;
return cast(int) arr.length;
}
It just seems like something this basic regarding dynamic
arrays should just be built-in.
What are you using it for?
glBufferData(GL_ARRAY_BUFFER, vertices.arrayByteSize,
vertices.ptr, GL_STATIC_DRAW);
I find that openGL uses array buffers all over the place.
I just keep going back to the idea that such low level
functionality should be inherent in either the language or
Phobos. If that is even possible.
