Class: Array

Inherits:
Object
  • Object
show all
Defined in:
lib/tarvit-helpers/extensions/counter.rb

Instance Method Summary collapse

Instance Method Details

#count_by_rule(&rule) ⇒ Object 



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# File 'lib/tarvit-helpers/extensions/counter.rb', line 13

def count_by_rule(&rule)
  info_by_rule(->(x){
    x.count
  }){|x|
    rule.(x)
  }
end

#info_by_rule(info, &rule) ⇒ Object 



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# File 'lib/tarvit-helpers/extensions/counter.rb', line 3

def info_by_rule(info, &rule)
  counts = self.group_by{|x|
    rule.(x)
  }.to_a.map{|x|
    x[1] = info.(x[1])
    x
  }
  Hash[counts]
end