Class: Hash
- Inherits:
-
Object
- Object
- Hash
- Defined in:
- lib/crunchr/core_ext.rb
Overview
stuff for dealing with statistics
monkey patches Hash, Array, ActiveRecord::Base and ActiveRecord::Relation
Instance Method Summary collapse
Instance Method Details
#delta(other) ⇒ Object
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# File 'lib/crunchr/core_ext.rb', line 7 def delta(other) return nil unless other.is_a?(Hash) delta = {} self.keys.each do |key| next if !other.has_key? key if self[key].is_a?(Hash) delta[key] = self[key].delta(other[key]) else delta[key] = (self[key] - other[key]) rescue nil end end delta end |