Re: [TCLCORE] TIP 272 (WAS Re: CFV: TIPs 272, 274)

[Arjen M. <arj...@wl...>]

Joe English wrote:

>Kevin Kenny wrote:
>  
>
>>TIP #272: PRESENT
>>    Does this TIP have a use case other than benchmarksmanship?
>>    
>>
>
>I can think of plenty of times when I've needed to
>iterate over a list from back-to-front; in such
>situations "foreach e [lreverse $l] {...}" is a
>much more pleasant solution than the equivalent
>"for {...} {...} {...} {...}" loop.
>
>[string reverse] has fewer apparent use cases, but
>there are a couple --
>
>    map {string reverse} [lsort [map {string reverse} $filenames]]
>
>is a quick-and-dirty way to collate a list of filenames
>by extension for instance.
>
>  
>
I am no expert, but I think string reversal is also useful with genetic 
sequences.

Regards,

Arjen