This is the revision history for $_ in <libera.chat:#esolangs>

factoid_idsubjectcopulapredicateauthornamespace
13590 $_ is The default variable or "topic". Absolutely lovely for small scripts. sed-ers and awk-o-holics will love it. For mid-size to large modules, use well-meaning variable names, otherwise you will let the Schrödinger's cat out and have crazy bugs. See http://www.modernperlbooks.com/mt/2012/04/defending-against-its-dynamic-scope.html | https://perldoc.pl/variables/$_ grinnz <*:##NULL>
10794 $_ is The default variable or "topic". Absolutely lovely for small scripts. sed-ers and awk-o-holics will love it. For mid-size to large modules, use well-meaning variable names, otherwise you will let the Schrödinger's cat out and have crazy bugs. See http://www.modernperlbooks.com/mt/2012/04/defending-against-its-dynamic-scope.html preaction <*:##NULL>
9171 $_ is absolutely lovely for small scripts. sed-ers and awk-o-holics will love it. For mid-size to large modules, use well-meaning variable names, otherwise you will let the Schrödinger's cat out and have crazy bugs. See http://www.modernperlbooks.com/mt/2012/04/defending-against-its-dynamic-scope.html mucker <*:##NULL>
9170 $_ is absolutely lovely for small scripts. For sed-ers and awk-o-holics will love it. For mid-size to large modules, use well-meaning variable names, otherwise you will let the Schrödinger's cat out and have crazy bugs. See http://www.modernperlbooks.com/mt/2012/04/defending-against-its-dynamic-scope.html mucker <*:##NULL>