transmute

Transmute

a framework for writing functional helpers in ruby

Installation

gem 'transmute'

Usage

require 'transmute'

# Transmute provides a very light weight framework for definining
# helpers in a functional, chainable manner
#
# To define a function, simply add an instance method to Transmute::Definition

Transmute::Definition.module_eval do
  def increment(value, n = 1)
    value + n
  end
end

# The methods you add to Transmute::Definition can then be used via the Transmute
# module

[1, 2, 3].map(&Transmute.increment)
#=> [2, 3, 4]

[1, 2, 3].map(&Transmute.increment).map(&Transmute.increment)
#=> [3, 4, 5]

[1, 2, 3].map(&Transmute.increment(2))
#=> [3, 4, 5]

TODO

• support some pattern matching-esque format (e.g.

on Integer
def increment(value, n = 1)
  value + n
end

on String
def increment(value, n = 1)
  value.to_i + n
end

on -> (value) { value.is_a?(Array) && value.all? { |v| v.is_a?(Integer) } }
def increment(value, n = 1)
  # Should recurse into other patterns
  value.map(&Transmute.increment(n))
end

)