Why you can't simply do the following?

def full_name_with_affiliation_and_position
  a_ap = " (#{a_ap})" unless (a_ap = [affiliation, academic_position].compact.join ', ').empty?
  "#{full_name}#{a_ap}"


end



On Friday, 8 February 2013 г. at 17:41, alexeymuranov (Alexey Muranov) wrote:

>  
> Issue #6721 has been updated by alexeymuranov (Alexey Muranov).
>  
>  
> =begin
> Here is a "real life" use case. It again has to do with formatting strings.
>  
> I want to have a list of conference participants in the form:
> Full Name (Affiliation, academic position)
> but without empty parentheses or trailing comma if the person has not
> profided the affiliation or the position. So i did like this:
>  
> class Participant
> def full_name_with_affiliation_and_position
> full_name +
> lambda { |a_ap| a_ap.empty? ? '' : " (#{ a_ap })" }[[affiliation, academic_position].compact.join(', ')]
> end
> end
>  
> (I will appreciate any more elegant solution.)
>  
> With (({#yield_self})) (or any other name for it), i would have written:
>  
> class Participant
> def full_name_with_affiliation_and_position
> full_name +
> [affiliation, academic_position].compact.join(', ')].yield_self { |a_ap| a_ap.empty? ? '' : " (#{ a_ap })" }
> end
> end
>  
> This would be a bit more readable for me.
> =end
>  
> ----------------------------------------
> Feature #6721: Object#yield_self
> https://bugs.ruby-lang.org/issues/6721#change-36056
>  
> Author: alexeymuranov (Alexey Muranov)
> Status: Open
> Priority: Normal
> Assignee:  
> Category: core
> Target version: next minor
>  
>  
> =begin
> I think the following method is missing from Ruby:
>  
> class Object
> def yield_self(*args)
> yield(self, *args)
> end
> end
>  
> I do not know a good use case, but it looks very natural to me. It can be used in method chains.
>  
> What do you think? Is there an alternative?
> =end
>  
>  
>  
> --  
> http://bugs.ruby-lang.org/
>  
>