September 2017
Beginner
402 pages
9h 52m
English
Content preview from Perl 6 Deep Dive
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Boolean coercion and negation operator
The ?^ operator converts its operand to a Boolean value and negates it. The result is the same as the result of the simple ! prefix operator.
say ?^True; # Falsesay ?^''; # Truesay ?^0; # Truesay ?^42; # False
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