class Streamer::Functors::Multiply
Multiply
multiplies a set of terms together
Public Instance Methods
call()
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# File lib/streamer/functors/multiply.rb, line 5 def call multiply end
multiply()
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# File lib/streamer/functors/multiply.rb, line 9 def multiply options.fetch(:terms).inject(1) do |total, item| unless item.is_a?(String) || item.is_a?(Numeric) fail "Streamer::Functor invalid term: #{item}" end val = total * (prop(item) || 0) if item.is_a? String val = total * item if item.is_a? Numeric val end end