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Postings from January 2011
Hi, I just released the invoker module on cpan, and i'd like to propose the syntax to be included in future perls. why: with the blooming modules providing the "method" keyword, we no longer need to have "my $self = shift" everywhere. however this makes "$self" now the most repeated code. Here's the idea: "use feature 'invocant'" enables the $-> operator. There are two variants: - "use invocant '$self" looks for the specific lexical variable named $self in the current context, and bails out in compile time if not found. - "use invocant 'auto'" looks for the first real pad entry in the nearest scope as the default invocant. I am not sure which one suites as better default behaviour. the latter seems less intrusive on insisiting variable names by can be a bit confusing. Conflicts: $-> can be parsed as $- > ($- greater than .. ), so we need to deprecate the use of $- (and hopefully the whole format system by requiring use of formats to add additional "use format" line.) the feature can install a warning when accessing $- before such deprecation. What do people think? Cheers, CLKThread Next