Hi, I am trying to build a hash of arrays from a list from a file that contains groups of strings (ie:
GroupA, 123a
GroupB, 222c
GroupA, 456d
GroupB, 456s
)
In this way I can group the strings, then use them as an array elsewhere. I am planning to push the strings into the hash of arrays this way:
  push(@{$hash{$key}}, $insert_val); (I picked this off of: http://www.perlmonks.org/?node_id=1977)

However, how do I declare and initialize this %hash before I can use it in the push above?

Thanks in advance.

In reply to How to declare a hash of array? by richyau

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