On Sat, 25 Sep 2010 17:17:58 -0400, Andrei Alexandrescu <[email protected]> wrote:

This has come up in http://d.puremagic.com/issues/show_bug.cgi?id=1482. Should std.file.read() return void[] or ubyte[]? There's one matter with assuming that void[] may contain pointers (which is not the case for something read from a file), so possibly ubyte[] is a more accurate type for describng raw bytes.

What are the pros and cons of returning void[] vs. ubyte[]?


Andrei

Pro:
Well, the very first thing I always do with std.file.read is to cast the data to the type I'm working with. So:

auto data = cast(float[])read("my_data.raw");

vs.

auto data = cast(float[])(cast(void[])read("my_data.raw"));

Having read return ubyte would mean adding an extra cast in several use cases

Con:
A void[] array is treated as having pointers in the GC, so extra false pointers could be an issue.
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