Token strings as "cheap" macros.

[Daniel Keep]

Reiner Pope wrote:
> Daniel Keep wrote:
>>
>> Reiner Pope wrote:
>>> [snip]
>>>
>>> I made my own compile-time formatter. I made one based on Phobos
>>> formatting, and then I decided I preferred indexable style (like Tango),
>>> so I've got one of each: formatStringTango and formatStringPhobos. Just
>>> now, I added a wrapper function for formatStringTango which allows
>>> expressions instead of indexes. Here's the unittest:
>>>
>>> unittest
>>> {
>>>     const x = 5;
>>>     const y = 7;
>>>     static assert(mixin(format("{x} = 5, {y} = 7")) == "5 = 5, 7 = 7");
>>> }
>>>
>>> I've attached the source code.  It's full of other templates I made to
>>> help work around problems with metaprogramming (__traits in particular),
>>> but it at least shows that it's pretty much achievable within the
>>> language. Of course, macros would be nice, to remove the mixin().
>>>
>>>   -- Reiner
>>>
>>
>> I've made one too :)
>>
>> http://while-nan.blogspot.com/2007/06/mixins-ctfe-and-shell-style-variable.html
>>
>>
>>     -- Daniel
> 
> What, the formatting can be evaluated at compile-time?
> 
>   -- Reiner

*double take*

Ok, don't mind me.  I didn't notice the "static" part.

/baka
/gomen

	-- Daniel