odedniv / nil_or

Execute Unless Nil

nil_or

Delegates methods to the target unless nil.

Installation

Add this line to your application's Gemfile:

gem 'nil_or'

And then execute:

$ bundle

Or install it yourself as:

$ gem install 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

Contributing

1. Fork it ( https://github.com/odedniv/nil_or/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request