Nils and method chaining

Question

I\'m just breaking into the ruby world and I could use a helping hand.

Suppose b is nil.

I\'d like the following code to return n

Answer 1

Starting from ruby v2.3.0 there is another way built into the language, the safe navigation operator (&.) You can write: a&.b&.c&.d and you will safely get nil if one of the calls in the chain returns nil. You can read more about it here: http://mitrev.net/ruby/2015/11/13/the-operator-in-ruby/