please help shrink this each_with_index() implementation

[Roel Schroeven]

Phlip schreef:
> Nobody wrote:
>> Writing robust software from the outset puts you at a competitive
>> disadvantage to those who understand how the system works.
> 
> And I, not my language, should pick and chose how to be rigorous. The language 
> should not make the decision for me.

You can always easily make your program less rigorous than the language,
but the reverse is generally very difficult. So a rigorous language
gives you the choice, why a non-rigorous language does not.

-- 
The saddest aspect of life right now is that science gathers knowledge
faster than society gathers wisdom.
  -- Isaac Asimov

Roel Schroeven