Module: Redis::Bitops::Queries::TreeBuildingHelpers

Included in:
BinaryOperator, UnaryOperator
Defined in:
lib/redis/bitops/queries/tree_building_helpers.rb

Overview

Helpers for expression tree building.

Add new logical operators here as/if they become supported by Redis’ BITOP command.

Instance Method Summary collapse

Instance Method Details

#&(rhs) ⇒ Object

Logical AND operator.



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# File 'lib/redis/bitops/queries/tree_building_helpers.rb', line 12

def & (rhs)
  BinaryOperator.new(:and, self, rhs)
end

#^(rhs) ⇒ Object

Logical XOR operator.



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# File 'lib/redis/bitops/queries/tree_building_helpers.rb', line 24

def ^ (rhs)
  BinaryOperator.new(:xor, self, rhs)
end

#|(rhs) ⇒ Object

Logical OR operator.



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# File 'lib/redis/bitops/queries/tree_building_helpers.rb', line 18

def | (rhs)
  BinaryOperator.new(:or, self, rhs)
end

#~ ⇒ Object

Logical NOT operator.

IMPORTANT: It inverts bits padding with zeroes till the nearest byte boundary. It means that setting the left-most bit to 1 and inverting will result in 01111111 not 0.

Corresponding Redis commands:

SETBIT “a” 0 1 BITOP NOT “b” “a” BITCOUNT “b”

> (integer) 7



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# File 'lib/redis/bitops/queries/tree_building_helpers.rb', line 40

def ~
  UnaryOperator.new(:not, self)
end