Re: need help in creating multi dimensional array

[davorg]

Perl doesn't really go in for all that restrictive nonsense. It will happily auto-vivify array elements at whatever index you give it.

You might want to look at Tie::Array::Bounded, but note that Perl doesn't actually have multi-dimensional arrays so that you'll need to restrict each array individually.

[misterb101]

yep, so if the indices in your arrays are arbitrary or if your multidimensional array is sparse (like a sparse matrix) you'd better use hashes of hashes.
for instance if you declare $a->[10000] = 1 it also autovivivies elements 0 until 9999 setting the value to undef. This takes up unnessessary (? difficult word;) space, and makes loops much more cumputation intensive.

Cheers,
Rob