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( Re:)+ What training do YOU need?

by rir (Vicar)
on Oct 22, 2002 at 14:57 UTC ( #207095=note: print w/replies, xml ) Need Help??

in reply to Re: Re: Re: What training do YOU need?
in thread What training do YOU need?

There is not much more. The context was about changing  for(;;) to  for(@array) or to  map {} @array and doing it with an editor macro to the worst work of a weak group of perlers. In a training presentation to that group.

My points were:

  • This, in its presentation, would trivialize the issues.
  • The  for(;;) and  for(LIST) constructs are very different.
  • This a rather small issue, surely there are more important problems in the above situation.

Your comparison of the  for(;;) and  while loops is a different issue. For the simple cases I prefer a  for( $i=1; $i < 10_000_000; $i++) as all the loop's controls are there upfront. This assumes good practice, i.e. you don't fiddle with  $i while looping. If you mess with  $i then you should use a  while loop.

You say:

Usually when someone uses a C-Style for loop they are not exploiting the equivalence to a while , but rather using a slightly less readable, more error prone and less efficient form of a for (LIST) loop.

Which is exactly the difference I was refering to with: more cumbersome but more adaptable.

If brevity caused my unclarity, please let me know.

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