Class: Array

Inherits:
Object
  • Object
show all
Defined in:
lib/heartwood/support/array.rb

Instance Method Summary collapse

Instance Method Details

#average(attr = nil) ⇒ Object 



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# File 'lib/heartwood/support/array.rb', line 2

def average(attr = nil)
  return nil if size == 0
  unless attr.nil?
    return collect(&:"#{attr}").reject(&:nil?).sum.to_f / size.to_f
  end
  sum.to_f / size.to_f
end