Class: Alf::Engine::Compact::Uniq

Inherits:

Object

Object
Alf::Engine::Compact::Uniq

show all

Includes:: Alf::Engine::Cog

Defined in:: lib/alf-engine/alf/engine/compact/uniq.rb

Overview

Remove duplicate tuples through an in-memory ‘to_a.uniq` heuristics.

Instance Attribute Summary collapse

#operand ⇒ Enumerable readonly

The operand.

Attributes included from Alf::Engine::Cog

Instance Method Summary collapse

#_each(&block) ⇒ Object
#initialize(operand, expr = nil) ⇒ Uniq constructor

Creates a Compact::Uniq instance.

Methods included from Alf::Engine::Cog

#each, #heading, #keys, #to_cog, #to_dot, #to_relation

Constructor Details

#initialize(operand, expr = nil) ⇒ `Uniq`

Creates a Compact::Uniq instance

# File 'lib/alf-engine/alf/engine/compact/uniq.rb', line 13

def initialize(operand, expr = nil)
  super(expr)
  @operand = operand
end

Instance Attribute Details

#operand ⇒ `Enumerable` (readonly)

Returns The operand.

Returns:

(Enumerable) —

The operand



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# File 'lib/alf-engine/alf/engine/compact/uniq.rb', line 10

def operand
  @operand
end

Instance Method Details

#_each(&block) ⇒ `Object`



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# File 'lib/alf-engine/alf/engine/compact/uniq.rb', line 19

def _each(&block)
  operand.to_a.uniq.each(&block)
end