nil_or

Delegates methods to the target unless nil.

Getting started

$ gem install nil_or

Or in your Gemfile:

gem "nil_or"

Usage

When am I going to need it? Instead of writing:

date_of_birth = params[:date_of_birth] ? params[:date_of_birth].to_date : nil

Write:

date_of_birth = params[:date_of_birth].nil_or.to_date

When x is not nil:

x = 5
x.nil_or.to_s
=> "5"
x.nil_or + 2
=> 7
x.nil_or.times { |i| puts i }
...

But when it is nil:

x = nil
x.nil_or.to_s
=> nil
x.nil_or + 2
=> nil
x.nil_or.shakalaka(1, 2) { does_nothing }
=> nil