COW vs. in-place.

[Jarrett Billingsley]

"Dave" <Dave_member at pathlink.com> wrote in message 
news:ealack$bjg$1 at digitaldaemon.com...
>
> What if selected functions in phobos were modified to take an optional 
> parameter that specified COW or in-place? The default for each would be 
> whatever they do now.
>
> For example, toupper and tolower?
>
> How many times have we seen something like this:
>
> str = toupper(str); // or equivalent in another language.

I've had the same idea; would be great for those trying to write libraries 
that make as few allocations as possible.  Not to mention just plain more 
efficient if you don't need a copy.