[ruby-core:75578] [Ruby trunk Feature#12263] Feature request: &&. operator (shorthand for foo && foo.method)

Issue #12263 has been updated by Daniel Ferreira.


A little bit more complete now!

Daniel Ferreira wrote:
> Let me try to see if I can provide a better example to explain my idea:
> 
> ~~~ ruby
> def &&.(method, *args, default: nil)
>    if self.respond_to?(:method)
>      self.send(:method, *args)
>    elsif default.nil?
>      self
>    else
>      default
>    end
> end
> ~~~



----------------------------------------
Feature #12263: Feature request: &&. operator (shorthand for foo && foo.method)
https://bugs.ruby-lang.org/issues/12263#change-58711

* Author: Johnny Shields
* Status: Feedback
* Priority: Normal
* Assignee: 
----------------------------------------
Ruby 2.3 introduced the `&.` safe-navigation operator. I'd like to propose a `&&.` operator which would be shorthand for:

~~~ruby
foo && foo.method
~~~

Unlike `&.`, this does not continue the chain if the variable evaluates to `false`. This would give the following result:

~~~ruby
false&.class       # => FalseClass
false&&.class      # => false

false&.inexisting  # => raises NoMethodError
false&&.inexisting # => false
~~~



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