You can't call keys on an array so that's not going to do anything useful.

As of 5.12 (2010), keys @array returns the indicies of the array.

$ perl -wMstrict -le 'my @x=qw/a b c d/; print for keys @x'
0
1
2
3

[download]

But yeah, in this context it's not useful.

In reply to Re^4: Error: when joining two hashes by haukex
in thread Error: when joining two hashes by Sami_R

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