This:

for my $i($#classArr) {

[download]

Does not increment $i like you think it does. Essentially, it loops only once, because $#classArr is only a single number; the last element number in the array.

You want something more like:

for my $i (0..$#classArr){

[download]

Which will put the current element number into $i on each iteration, starting from 0.

update: Or, more idiomatically (untested):

for my $class (@classArr){
    for my $href (@$class){
        for my $key (sort keys %$href){
            print $csv "$key-- $href->{$key},";
        }
    }
}

[download]

In reply to Re: Creating CSV term document matrix from a hash stored in multideminsional array by stevieb
in thread Creating CSV term document matrix from a hash stored in multideminsional array by lobs

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