Bitmask

Bitmask extends the Integer class to allow for easy manipulation of a number as a bit field.

  0xb0100.clear_bit(3)  #=> 0

Methods

bit?
bit_set?
bitmask?
cast_from
clear_bit
clear_bitmask
set_bit
set_bitmask
test_bit
test_bitmask
to_json

Public Class methods

cast_from(object, options={})

[ show source ]

# File lib/facets/more/typecast.rb, line 144
    def cast_from(object, options={})
      retval = super
      return retval unless retval == nil
      return object.to_i if object.respond_to? :to_i
    end

Public Instance methods

bit?(bit)

Alias for test_bit

bit_set?(bit)

Alias for test_bit

bitmask?(mask)

Alias for test_bitmask

clear_bit(bit)

[ show source ]

# File lib/facets/more/bitmask.rb, line 41
  def clear_bit(bit)
    mask = (1 << bit)
    self & ~mask
  end

clear_bitmask(mask)

[ show source ]

# File lib/facets/more/bitmask.rb, line 46
  def clear_bitmask(mask)
    self & ~mask
  end

set_bit(bit)

[ show source ]

# File lib/facets/more/bitmask.rb, line 32
  def set_bit(bit)
    mask = (1 << bit)
    self | mask
  end

set_bitmask(mask)

[ show source ]

# File lib/facets/more/bitmask.rb, line 37
  def set_bitmask(mask)
    self | mask
  end

test_bit(bit)

This method is also aliased as bit? bit_set?

[ show source ]

# File lib/facets/more/bitmask.rb, line 50
  def test_bit(bit)
    mask = (1 << bit)
    (self & mask) != 0
  end

test_bitmask(mask)

This method is also aliased as bitmask?

[ show source ]

# File lib/facets/more/bitmask.rb, line 57
  def test_bitmask(mask)
    (self & mask) != 0
  end

to_json(*)

Returns a JSON string representation for this Integer number.

[ show source ]

# File lib/facets/more/json.rb, line 585
  def to_json(*) to_s end