> that a single digit it normally returns an int, but for a double digit a string.

It's more complex than that. It depends on what you did with the value, on the version of Perl, what JSON module you use and its version, and sometimes even more. See my slides on the topic.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^3: Int becomes String when I convert to json by choroba
in thread Int becomes String when I convert to json by bartender1382

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