Module: Array::Unique::ArrayInterface

Includes:
Hooked::ArrayInterface
Included in:
Array::Unique
Defined in:
lib/array/unique/array_interface.rb

Instance Method Summary collapse

Instance Method Details

#[]=(index, object) ⇒ Object

[]= #



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# File 'lib/array/unique/array_interface.rb', line 26

def []=( index, object )

  # we only set if we don't already have the object being inserted
  # for this reason we return nil if no insert occurred

  return_value = nil

  # make sure that set is unique
  unless @unique_keys.has_key?( object )
    
    if index > count
      index = count
      unless object.nil? or @unique_keys.has_key?( nil )
        index += 1
      end
    end
    return_value = super

    @unique_keys[ object ] = true

  end
  
  return return_value
  
end

#collect! ⇒ Object Also known as: map!

collect! #

map!      #



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# File 'lib/array/unique/array_interface.rb', line 96

def collect!
  
  return to_enum unless block_given?
  
  delete_indexes = [ ]
  self.each_with_index do |this_object, index|
    replacement_object = yield( this_object )
    if @unique_keys.has_key?( replacement_object ) and replacement_object != this_object
      delete_indexes.push( index )
    else
      self[ index ] = replacement_object
    end
  end
  
  delete_indexes.sort.reverse.each do |this_index|
    delete_at( this_index )
  end
  
  return self
  
end

#include?(object) ⇒ Boolean

include? #

Returns:

  • (Boolean) 


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# File 'lib/array/unique/array_interface.rb', line 85

def include?( object )
  
  return @unique_keys.has_key?( object )
  
end

#initialize(configuration_instance = nil, *args) ⇒ Object

initialize #



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# File 'lib/array/unique/array_interface.rb', line 12

def initialize( configuration_instance = nil, *args )

  @unique_keys = { }
  
  super
  
end

#perform_delete_at_between_hooks(index) ⇒ Object

perform_delete_at_between_hooks #



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# File 'lib/array/unique/array_interface.rb', line 73

def perform_delete_at_between_hooks( index )

  @unique_keys.delete( self[ index ] )

  return super
  
end

#perform_single_object_insert_between_hooks(index, object) ⇒ Object

perform_single_object_insert_between_hooks #



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# File 'lib/array/unique/array_interface.rb', line 56

def perform_single_object_insert_between_hooks( index, object )

  if @unique_keys.has_key?( object )
    index = nil
  else
    @unique_keys[ object ] = true
    index = super
  end
  
  return index
  
end

#uniq ⇒ Object

uniq #



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# File 'lib/array/unique/array_interface.rb', line 123

def uniq

  return self

end

#uniq! ⇒ Object

uniq! #



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# File 'lib/array/unique/array_interface.rb', line 133

def uniq!

  return self

end