Class: Scale::Source::Enumerable

Inherits:

Object

• Object
• Scale::Source::Enumerable

Defined in:

lib/scale/source.rb

Overview

Contains logic for dealing with input that includes Ruby’s core ::Enumerable

Instance Method Summary

• #denominator ⇒ Float
• #initialize(enum) ⇒ Enumerable constructor

  A new instance of Enumerable.

• #numerator(input) ⇒ Float

Constructor Details

#initialize(enum) ⇒ Enumerable

Returns a new instance of Enumerable.

Parameters:

• enum (::Enumerable) —

  An enumerable (Array, Set, etc) to operate on

# File 'lib/scale/source.rb', line 33

def initialize(enum)
  @enum = enum
end

Instance Method Details

#denominator ⇒ Float

Returns:

• (Float)

# File 'lib/scale/source.rb', line 44

def denominator
  (@enum.size - 1).to_f
end

#numerator(input) ⇒ Float

Parameters:

• input (Numeric)

Returns:

• (Float)

# File 'lib/scale/source.rb', line 39

def numerator(input)
  @enum.to_a.index(input).to_f
end