Results for: "partition"

Returns true if no bit that is set (=1) in mask is also set in self; returns false otherwise.

Example values:

0b11110000  self
0b00001111  mask
0b00000000  self & mask
      true  self.nobits?(mask)

0b00000001  self
0b11111111  mask
0b00000001  self & mask
     false  self.nobits?(mask)

Related: Integer#allbits?, Integer#anybits?.

Returns an array of integers representing the base-radix digits of self; the first element of the array represents the least significant digit:

12345.digits      # => [5, 4, 3, 2, 1]
12345.digits(7)   # => [4, 6, 6, 0, 5]
12345.digits(100) # => [45, 23, 1]

Raises an exception if self is negative or base is less than 2.

Return the class or module refined by the receiver.

module M
  refine String do
  end
end

M.refinements[0].target # => String

Returns a new Complex object formed from the arguments, each of which must be an instance of Numeric, or an instance of one of its subclasses: Complex, Float, Integer, Rational; see Rectangular Coordinates:

Complex.rect(3)             # => (3+0i)
Complex.rect(3, Math::PI)   # => (3+3.141592653589793i)
Complex.rect(-3, -Math::PI) # => (-3-3.141592653589793i)

Complex.rectangular is an alias for Complex.rect.

Returns a new Complex object formed from the arguments, each of which must be an instance of Numeric, or an instance of one of its subclasses: Complex, Float, Integer, Rational. Argument arg is given in radians; see Polar Coordinates:

Complex.polar(3)        # => (3+0i)
Complex.polar(3, 2.0)   # => (-1.2484405096414273+2.727892280477045i)
Complex.polar(-3, -2.0) # => (1.2484405096414273+2.727892280477045i)

Returns the imaginary value for self:

Complex.rect(7).imag     # => 0
Complex.rect(9, -4).imag # => -4

If self was created with polar coordinates, the returned value is computed, and may be inexact:

Complex.polar(1, Math::PI/4).imag # => 0.7071067811865476 # Square root of 2.

Returns the absolute value (magnitude) for self; see polar coordinates:

Complex.polar(-1, 0).abs # => 1.0

If self was created with rectangular coordinates, the returned value is computed, and may be inexact:

Complex.rectangular(1, 1).abs # => 1.4142135623730951 # The square root of 2.

Returns the argument (angle) for self in radians; see polar coordinates:

Complex.polar(3, Math::PI/2).arg  # => 1.57079632679489660

If self was created with rectangular coordinates, the returned value is computed, and may be inexact:

Complex.polar(1, 1.0/3).arg # => 0.33333333333333326

Returns the array [self.real, self.imag]:

Complex.rect(1, 2).rect # => [1, 2]

See Rectangular Coordinates.

If self was created with polar coordinates, the returned value is computed, and may be inexact:

Complex.polar(1.0, 1.0).rect # => [0.5403023058681398, 0.8414709848078965]

Complex#rectangular is an alias for Complex#rect.

Returns the array [self.abs, self.arg]:

Complex.polar(1, 2).polar # => [1.0, 2.0]

See Polar Coordinates.

If self was created with rectangular coordinates, the returned value is computed, and may be inexact:

Complex.rect(1, 1).polar # => [1.4142135623730951, 0.7853981633974483]

Returns the conjugate of self, Complex.rect(self.imag, self.real):

Complex.rect(1, 2).conj # => (1-2i)

Returns the conjugate of self, Complex.rect(self.imag, self.real):

Complex.rect(1, 2).conj # => (1-2i)

Returns true if both self.real.finite? and self.imag.finite? are true, false otherwise:

Complex.rect(1, 1).finite?               # => true
Complex.rect(Float::INFINITY, 0).finite? # => false

Related: Numeric#finite?, Float#finite?.

Returns 1 if either self.real.infinite? or self.imag.infinite? is true, nil otherwise:

Complex.rect(Float::INFINITY, 0).infinite? # => 1
Complex.rect(1, 1).infinite?               # => nil

Related: Numeric#infinite?, Float#infinite?.

Returns zero if self is positive, Math::PI otherwise.

Returns array [self, 0].

Returns array [self.abs, self.arg].

Returns self.

Raises an exception if the value for freeze is neither true nor nil.

Related: Numeric#dup.

Returns the absolute value of self.

12.abs        #=> 12
(-34.56).abs  #=> 34.56
-34.56.abs    #=> 34.56

Returns self if self is not a zero value, nil otherwise; uses method zero? for the evaluation.

The returned self allows the method to be chained:

a = %w[z Bb bB bb BB a aA Aa AA A]
a.sort {|a, b| (a.downcase <=> b.downcase).nonzero? || a <=> b }
# => ["A", "a", "AA", "Aa", "aA", "BB", "Bb", "bB", "bb", "z"]

Of the Core and Standard Library classes, Integer, Float, Rational, and Complex use this implementation.

Related: zero?

Returns true if self is a finite number, false otherwise.

Returns nil, -1, or 1 depending on whether self is finite, -Infinity, or +Infinity.

Returns zero.

Returns self.