V2 string

[Derek Parnell]

On Thu, 05 Jul 2007 11:51:30 -0700, Walter Bright wrote:

> Derek Parnell wrote:
>> I'll make my code example more free from assumed functionality.
>> 
>>  char[] qwerty;
>>  
>>  qwerty = KJHGF(poiuy).dup;
>>  version(xyzzy)
>>  {
>>      MNBVC(qwerty);
>>  }
>> 
>> As you can see, my point is made without regard to converting stuff to
>> lower case.
> 
> My point is that the way the snippet is written is inside out. Do not 
> use .dup to preemptively make a copy in case it gets changed somewhere 
> later one. The style is to make a .dup *only if* the contents will be 
> changed and do the .dup *at the site* of the modification.
> 
> In other words, dups should be done from the bottom up, not from the top 
> down.
> 
> I think such a style helps fit things together nicely and avoids strange 
> .dups appearing in inexplicable places.

Thanks. This is what I meant by taking rethinking the design of my
routines. I'll strongly consider your suggestion even though it does
complicate the algorirhm for readers of the code.

-- 
Derek Parnell
Melbourne, Australia
skype: derek.j.parnell