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Re^3: how many elements in array?

by bradcathey (Prior)
on Apr 18, 2005 at 13:02 UTC ( #448830=note: print w/replies, xml ) Need Help??

in reply to Re^2: how many elements in array?
in thread how many elements in array?

Helpful in a loop as in:

for ( 0 .. $#one ) { stuff to each element... }

"The important work of moving the world forward does not wait to be done by perfect men." George Eliot

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Re^4: how many elements in array?
by Limbic~Region (Chancellor) on Apr 18, 2005 at 13:11 UTC
    There are lots of ways in which $#array can be useful otherwise it wouldn't exist in the language. My point was more about correctness. For instance, if I am doing the following:
    my @ucase = grep { $_ eq uc() } @words; my $cnt = @ucase;
    I have the count of uppercase words, making all appropriate assumptions about @words. I would need to use $#ucase + 1* since it doesn't produce a count of elements otherwise. This was not clear from the post that I was replying to.

    Cheers - L~R

    * As RazorbladeBidet points out, modifying $[, is one highly discouraged way of accomplishing the same thing.

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