Constant declarations for mac OSX

[Thomas Kuehne]

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Gareth Baker schrieb am 2006-02-23:
> I'm running GDC on mac OSX. The mac tags events with a four character code which
> is converted to a 
> UInt32 along the lines of:
>
> (s[0] << 24) || (s[1] << 16) || (s[2] << 8) || (s[3])
>
> where s[n] is the ascii charater number.
>
> I need to declare:
>
> const OSType    kEventClassCommand            = FOUR_CHAR_CODE("cmds");
>
> Browsing the documentation seems to indicate I need a template but I can't seem
> to work out how. Can 
> anybody help?


| template FOUR_CHAR_CODE(char[] cmd){
|     static if(cmd.length != 4){
|         pragma(msg, "require 4 chars");
|         static assert(0);
|     }else{
|         const uint FOUR_CHAR_CODE = (cmd[0] << 24) | (cmd[1] << 16) | (cmd[2] << 8) | cmd[3];
|     }
| }

...

| const OSType    kEventClassCommand = FOUR_CHAR_CODE!("cmds");

Thomas


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