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Postings from April 2006
Author: larry Date: Mon Apr 10 21:39:58 2006 New Revision: 8645 Modified: doc/trunk/design/syn/S02.pod Log: Outlawed 42. (but inlawed .42) Modified: doc/trunk/design/syn/S02.pod ============================================================================== --- doc/trunk/design/syn/S02.pod (original) +++ doc/trunk/design/syn/S02.pod Mon Apr 10 21:39:58 2006 @@ -215,8 +215,8 @@ of it is always considered a method call on C<$_> where a term is expected. If a term is not expected at this point, it is a syntax error. (Unless, of course, there is an infix operator of that name -beginning with dot. You could, for instance, define a Fortranly C<< -infix:<.EQ.> >> if the fit took you. But you'll have to be sure to +beginning with dot. You could, for instance, define a Fortranly +C<< infix:<.EQ.> >> if the fit took you. But you'll have to be sure to always put whitespace in front of it, or it would be interpreted as a postfix method call instead.) @@ -244,6 +244,15 @@ if you mean the postfix method call. +One consequence of all this is that you may no longer write a Num as +C<42.> with just a trailing dot. You must instead say either C<42> +or C<42.0>. In other words, a dot following a number can only be a +decimal point if the following character is a digit. Otherwise the +postfix dot will be taken to be the start of some kind of method call +syntax, whether long-dotty or not. (The C<.123> form with a leading +dot is still allowed however when a term is expected, and is equivalent +to C<0.123>.) + =back =head1 Built-In Data Types