Perl performance: for(1..200000) vs for($_=1;$_<=200000;$_++) -


for(1..200000) {...} vs for($_=1;$_<=200000;$_++) {...}

does first 1 have create array of 200,000 items or same second?

i can definitively for range ($lower .. $upper) doesn't create actual temporary list in memory. it did 12 years ago, not anymore. , matter of fact, gives better performance explicit c-style for-loop (as others' benchmarks have shown), because perl able counting loop in nice, efficient internal code. shouldn't afraid use it.


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