A set of functional utilities for working with callables in Ruby.

Heavily inspired by lodash.

I love Symbol#to_proc. It just feels good.

emails.each(&:deliver)

However, if your method takes an argument, you need to refactor to use a block.

emails.each { |email| email.deliver(:hello) }

What if you could do this?

emails.each(&:deliver.partial(:hello))

Add this line to your application's Gemfile:

gem 'proc_utils'

And then execute:

$ bundle

Or install it yourself as:

$ gem install proc_utils

require 'proc_utils/core_ext/proc'

Now, procs will have the following methods:

• partial
• partial_right
• bind
• flip
• wrap
• compose
• memoize
• once

require 'proc_utils/core_ext/symbol'

Now, symbols will have the following methods:

• partial
• partial_right
• bind
• memoize
• once

I get it, core extensions are scary. Lucky for you, ProcUtils offers pure functions.

For example:

func = proc { |name| puts name }
func = ProcUtils.bind(func, 'Rick Flair')
func.call

Bug reports and pull requests are welcome on GitHub at https://github.com/rzane/proc_utils.

The gem is available as open source under the terms of the MIT License.