Flap

tap + instance_eval

Add this line to your application's Gemfile:

gem 'flap'

And then execute:

$ bundle

Or install it yourself as:

$ gem install flap

require "flap"

hash = {a: 1, b: 2}

# w/o flap
ret = hash.dup.tap {|h| h.delete(:a) }

p hash #=> {:a => 1, :b => 2}
p ret #=> {:b => 2}

# w/ flap
ret = hash.dup.instance_eval_tap { delete :a }

p hash #=> {:a => 1, :b => 2}
p ret #=> {:b => 2}

You can also use short version of methods.

Flap.enable_short_methods!

hash = {a: 1}
hash.itap { delete :a } #=> {}

1. Fork it ( http://github.com/hekk/flap/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 new Pull Request