While perl is correctly lazy in it's evaluation of a ranage

It's not. There's one special case though, and that's if the list of a for is just a range. This optimization was introduced in 5.005.

The question is why is perl still the way it is?
Because you haven't written a patch for it yet.

That's generally the way how Perl has been evolved for the last decade, or even longer. There isn't a commission that sits down and says "hmmm, what nice things for our users shall we do for this release?". Instead, people find things bothersome. Or find features lacking. If it itches them enough, they write a patch.

So, let's bounce back the question. Why haven't you written a patch to optimize this yet? Then you have the answer.

In reply to Re: Making perl's map and grep more large list friendly by JavaFan
in thread Making perl's map and grep more large list friendly by nudge

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