The andand gem will allow you to write code like: hash.andand[:key].andand[:key2]
where anything on a nil object returns a proxy that accepts any method and returns nil. This is far safer than what you propose as it won't affect anyone. In general though, while this may seem convenient, it makes reasoning about code significantly more difficult. The more code you write, the more I believe that you find that we need *more* explicit handling of nil not less. On Sun, Jul 27, 2014 at 1:52 PM, Sergio Campamá <[email protected]> wrote: > I think a better approach is > > return hash && hash[:data] && hash[:data][:details] && > hash[:data][:details][:id] > > That will return the value or nil if the chain was broken at any > point. I know it's not the same, but much less code than the example. > -------------------------------------- > Sergio Campamá > [email protected] > > > > On Sun, Jul 27, 2014 at 10:48 AM, Steve Klabnik <[email protected]> > wrote: > > This has a very large potential to break a very, very large amount of > code. > > > > -- > > You received this message because you are subscribed to the Google > Groups "Ruby on Rails: Core" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected]. > > To post to this group, send email to [email protected]. > > Visit this group at http://groups.google.com/group/rubyonrails-core. > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Core" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/rubyonrails-core. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/rubyonrails-core. For more options, visit https://groups.google.com/d/optout.
