ruby-core

Issue #12263 has been updated by Nobuyoshi Nakada.


Daniel Ferreira wrote:
> Maybe the proposed `&&.` operator would be a good case scenario for this situations acting like `Hash#fetch` this way:
> 
> ~~~ ruby
> class Foo
>   def bar(baz)
>      baz&&.(:qux, 'whatever')
>   end
> end
> ~~~

It seems different from the original proposal at all.

----------------------------------------
Feature #12263: Feature request: &&. operator (shorthand for foo && foo.method)
https://bugs.ruby-lang.org/issues/12263#change-58702

* 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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