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Re: Sorting array, getting modification of read-only value error

by thundergnat (Deacon)
on Nov 28, 2012 at 19:54 UTC ( #1006095=note: print w/ replies, xml ) Need Help??


in reply to Sorting array, getting modification of read-only value error

What tobyink++ said. You are filling your @S array starting at index 1 ($v=1;). But arrays are (by default) zero indexed, so $S[0] has nothing in it. Sort then tries to auto-vivify values for $S[0] and gives you an error. Minimal "fix" is to index $v from 0.

You have many, many other sub-optimal things in there too though.


Comment on Re: Sorting array, getting modification of read-only value error
Re^2: Sorting array, getting modification of read-only value error
by myelinviolin (Novice) on Nov 28, 2012 at 21:00 UTC
    This worked!! Thank you so much! This makes so much sense with the autovivication now. There WAS a gap in the array, so that's why it couldn't sort it. I know I do things differently than most people, but for me, readability and ease of use trump inefficiency any day. As long as the program runs without any wait periods, then it's ok with me.

      ...I don't think the grandparent was talking about inefficiency when he said "sub-optimal"...

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