Class: Musicality::CompoundSequence

Inherits:
Object
  • Object
show all
Defined in:
lib/musicality/composition/util/compound_sequence.rb

Instance Method Summary collapse

Constructor Details

#initialize(combine_method, sequences) ⇒ CompoundSequence

Returns a new instance of CompoundSequence.



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# File 'lib/musicality/composition/util/compound_sequence.rb', line 4

def initialize combine_method, sequences
  @seqs = sequences
  @comb_meth = combine_method
end

Instance Method Details

#at(offset) ⇒ Object 



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# File 'lib/musicality/composition/util/compound_sequence.rb', line 9

def at offset
  if offset.is_a? Enumerable
    return enum_for(:at,offset) unless block_given?
    enums = @seqs.map {|s| s.at(offset) }
    offset.size.times { yield combine(enums.map {|e| e.next }) }
  else
    vals = @seqs.map {|s| s.at(offset) }
    return combine(vals)
  end
end

#over(range) ⇒ Object 



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# File 'lib/musicality/composition/util/compound_sequence.rb', line 26

def over range
  return enum_for(:over,range) unless block_given?
  enums = @seqs.map {|s| s.over(range) }
  range.size.times { yield combine(enums.map {|e| e.next }) }
end

#take(n) ⇒ Object 



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# File 'lib/musicality/composition/util/compound_sequence.rb', line 20

def take n
  return enum_for(:take,n) unless block_given?
  enums = @seqs.map {|s| s.take(n) }
  n.times { yield combine(enums.map {|e| e.next }) }
end

#take_back(n) ⇒ Object 



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# File 'lib/musicality/composition/util/compound_sequence.rb', line 32

def take_back n
  return enum_for(:take_back,n) unless block_given?
  enums = @seqs.map {|s| s.take_back(n) }
  n.times { yield combine(enums.map {|e| e.next }) }
end