Re: convert char[4] to uint at compile time

[Denis Koroskin]

On Tue, 23 Dec 2008 11:07:08 +0300, Janderson <a...@me.com> wrote:

Moritz Warning wrote:

On Tue, 16 Dec 2008 19:54:11 +0000, BCS wrote:

Reply to Moritz,

Hi,

I have problems to convert a char[4] to an uint at compile time. All
variations (I've tried) of using an enum crashes dmd:

union pp { char[4] str; uint num; }
const uint x = pp("abcd").num
This does also doesn't work:

const uint x = cast(uint) x"aa aa aa aa";

Any ideas?

template Go (char[4] arg)
{
    const uint Go = (arg[0] << 24) | (arg[1] << 16) | (arg[2] << 8) |
    arg[3];
}

import std.stdio;
void main()
{
   writef("%x\n", Go!("Good"));
}

 Thanks!
That workaround should do it.

Maybe it will be possible to just do cast(uint) "abcd" in the future. :>

That would only cast the pointer. It should be something like : cast(uint)(*"abcs") or *cast(uint*) "abcs".

-Joel

And what about endianness? You can't have a feature in a language that gives 
different results in different environment.