Module: Enumerable

Included in:
Rubabel::Atom, Rubabel::Bond, Rubabel::Molecule, Rubabel::MoleculeData
Defined in:
lib/rubabel/core_ext/enumerable.rb

Instance Method Summary collapse

Instance Method Details

#index_by ⇒ Object

File activesupport/lib/active_support/core_ext/enumerable.rb, line 94



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# File 'lib/rubabel/core_ext/enumerable.rb', line 4

def index_by
  return to_enum :index_by unless block_given?
  Hash[map { |elem| [yield(elem), elem] }]
end

#uniq_by ⇒ Object 



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# File 'lib/rubabel/core_ext/enumerable.rb', line 9

def uniq_by
  h = {}
  inject([]) {|a,x| h[yield(x)] ||= a << x}
end