Smartmatching

• Smartmatching is key to a number of Perl 6's features
• You can explicitly request a smartmatch with the ~~ operator
• Smartmatch tries to do the right thing:
• $a ~~ m/\S+/ -- run the regex on $a, returns Match
• $a ~~ Int -- returns True if $a is an Int
• $a ~~ 34 -- returns True if $a == 34
• $a ~~ { $_.Str ne $_.perl } -- returns result of calling closure with argument $a
• $a ~~ 2..5 -- returns True if $a is between 2 and 5, inclusive
• Syntactic sugar for (last example) (2..5).ACCEPTS($a)

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