Class: Delta

Inherits:
Object
  • Object
show all
Defined in:
lib/delta/base.rb,
lib/delta/identifier.rb,
lib/delta/set_operator.rb,
lib/delta/set_operator/enumerable.rb,
lib/delta/set_operator/active_record.rb

Defined Under Namespace

Classes: Identifier, SetOperator

Instance Method Summary collapse

Constructor Details

#initialize(from:, to:, identifiers: nil, changes: []) ⇒ Delta

Returns a new instance of Delta.



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# File 'lib/delta/base.rb', line 2

def initialize(from:, to:, identifiers: nil, changes: [])
  self.set = SetOperator.adapt(
    a: from,
    b: to,
    identifiers: identifiers,
    changes: changes
  )
end

Instance Method Details

#additions ⇒ Object 



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# File 'lib/delta/base.rb', line 11

def additions
  Enumerator.new do |y|
    set.b_minus_a.each do |b|
      y.yield b
    end
  end
end

#deletions ⇒ Object 



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# File 'lib/delta/base.rb', line 27

def deletions
  Enumerator.new do |y|
    set.a_minus_b.each do |a|
      y.yield a
    end
  end
end

#modifications ⇒ Object 



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# File 'lib/delta/base.rb', line 19

def modifications
  Enumerator.new do |y|
    set.intersection.each do |b|
      y.yield b
    end
  end
end