$, __dollar, opDollar: can't define my own?

[Fredrik Olsson]

Oskar Linde skrev:
<snip>
> This may all be a bit overkill, but what would be really great is having 
> a range type that a..b expands into at lest. That type could then 
> support opApply making
> 
> foreach(i; 0..10) { ... }
> 
> possible for instance.
> 
YES! Ranges and sets, as I have pleaded for ages. It is a bliss for 
reducing code size, and allows some very nice readability stuff. It is 
not that hard to implement either, most Pascal implementations does it 
with a simple bit-field.
Doing it with templates and tricks gets you the functionality, but 
misses the point of a clean and readable syntax.

// is it lowercase ASCII?
if (ch in 'a'..'z') { ... }

// Is the selection bold?
if (TextAttriibutes.BOLD in text.selection.attributes() { ... }

// Make selected text underline.
text.selection.attributes += TextAttriibutes.UNDERLINE;

// Get all days where both Adam and Beatrice are free, but not monday.
goodDays = adam.availableDays - beatrice.availableDays - Days.MONDAY;


Ranges and sets are priceless for handling "a bag of values", without 
the need to write error prone iterations, or just as error prone and 
large boolean expressions.


// Fredrik Olsson