Class: Streamer::Functors::Sum

Inherits:

Functor

• Object
• Functor
• Streamer::Functors::Sum

Defined in:

lib/streamer/functors/sum.rb

Overview

Sum sums the list using the property provided

Instance Attribute Summary

Attributes inherited from Functor

#options, #payload

Instance Method Summary

• #call ⇒ Object

Methods inherited from Functor

#class_name, #initialize, #type_name

Constructor Details

This class inherits a constructor from Streamer::Functors::Functor

Instance Method Details

#call ⇒ Object

# File 'lib/streamer/functors/sum.rb', line 5

def call
  list.inject(0.0) do |total, item|
    total + item[options.fetch(:property)]
  end
end