~~ is called the "smart match operator" and supersedes the binding operator, =~. It allows you to use it on anything and it'll do the right thing, ie: 
$i = 1; if ( $i ~~ 1 ) { # $i == 1
$i = 'foo'; if ( $i ~~ 'foo' ) { # $i eq 'foo'
$i = 'foo'; if ( $i ~~ m/fo(.)/ ) { # $1 contains 'o'

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Read the "Smart Matching" section of Synopsis 4 for details.

rx is a replacement for qr. rx:perl5 means use perl5-compatible regular expressions. More details about rx in Synopsis 5.

In reply to Re^2: Pugs Tic Tac by bmann
in thread Pugs Tic Tac by mkirank

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