Ever played with a more stack-oriented / concatenative / postfix language, like Factor? "," split [ string>number 5 > ] count or "," split [ string>numbe

Ever played with a more stack-oriented / concatenative / postfix language, like Factor? "," split [ string>number 5 > ] count or "," split [ string>number ] map [ 5 > ] count or "," split [ string>number 5 > ] filter length