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Add trap: prefix minus / method op precedence
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@thundergnat
thundergnat committed Nov 4, 2018
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Expand Up @@ -1038,6 +1038,16 @@ to a power, use parentheses:
say (-1)²; # OUTPUT: «1␤»
say (-1)**2; # OUTPUT: «1␤»
=head2 Method operator calls and prefix minus
Prefix minus binds looser than dotty method op calls. The prefix minus will be
applied to the return value from the method. To ensure the the minus gets
passed as part of the argument, enclose in parenthesis.
=for code
say -1.abs; # OUTPUT: «-1␤»
say (-1).abs; # OUTPUT: «1␤»
=head1 Subroutine and method calls
Subroutine and method calls can be made using one of two forms:
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@zoffixznet
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FWIW, this makes it sound like there's something special about prefix minus, but this precedence setup affects all prefix ops and you can effect a different treatment by detaching the method (only alphanumeric methods can be detached):

say -1 .abs; # OUTPUT: «1␤»

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