Re: What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff

in reply to What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff

I would barter all of these improvements for a less noisy but performant elemement accessor syntax:

i.e.

  $it->{$key}->[$idx]->{section}->[$i]->{'some.doc'}->method1()->[sub1
+(5)]->method2($x);
  # or
  $it->{$key}[$idx]{section}[$i]{'some.doc'}->method1()->[sub1(5)]->me
+thod2($x);
[download]

becomes something like:

  $it->@( $key $idx section $i some.doc method1() sub1(5) method2($x) 
+);
[download]

or something smarter...

Disambiguation: If the actual element is blessed and can('method1'), it is invoked. Otherwise it is treated as a function call (:: might be used for further disambiguation).

I.e. similar to Data::Diver, just more efficient together with a pragma or other method to control auto-vivification. Yes, I am aware, that I could build something similar as a module, but it would be pure Perl.

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Re^2: What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff by tobyink (Canon) on Sep 11, 2020 at 08:44 UTC
Potentially ambiguous. What if `$it->{$key}` returns a blessed scalarref that overloads both `@{}` and `%{}`? Is the next step `$it->{$key}[$idx]` or `$it->{$key}{$idx}`? toby döt ink	[reply] [d/l] [select]
Re^3: What esteemed monks think about changes necessary/desirable in Perl 7 outside of OO staff by Perlbotics (Bishop) on Sep 11, 2020 at 17:12 UTC
Good point. That's the drawback where edge-cases can add a lot of complexity. Perhaps throw an exception? Allow annotations on how to resolve (see below)? Implicit rules? — down the rabbit hole of smart-matching :( Example: Resolve overloaded `@{}` by using the standard notation as a hint like so? `$it->@( $key [$idx] section $i some.doc method1() sub1(5) method2($x) +);` [download] It should be rarely needed.	[reply] [d/l] [select]

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