Results for: "Data"

Create a matrix by stacking matrices horizontally

x = Matrix[[1, 2], [3, 4]]
y = Matrix[[5, 6], [7, 8]]
Matrix.hstack(x, y) # => Matrix[[1, 2, 5, 6], [3, 4, 7, 8]]

Returns the adjugate of the matrix.

Matrix[ [7,6],[3,9] ].adjugate
  => 9 -6
     -3 7

Returns true if this is a unitary matrix Raises an error if matrix is not square.

Returns a new matrix resulting by stacking horizontally the receiver with the given matrices

x = Matrix[[1, 2], [3, 4]]
y = Matrix[[5, 6], [7, 8]]
x.hstack(y) # => Matrix[[1, 2, 5, 6], [3, 4, 7, 8]]

Returns a new matrix resulting by stacking vertically the receiver with the given matrices

x = Matrix[[1, 2], [3, 4]]
y = Matrix[[5, 6], [7, 8]]
x.vstack(y) # => Matrix[[1, 2], [3, 4], [5, 6], [7, 8]]

Returns the conjugate of the matrix.

Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]]
  => 1+2i   i  0
        1   2  3
Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]].conjugate
  => 1-2i  -i  0
        1   2  3

Terminates option parsing. Optional parameter arg is a string pushed back to be the first non-option argument.

Add separator in summary.

Terminates option parsing. Optional parameter arg is a string pushed back to be the first non-option argument.

Add separator in summary.

This is a convenience method which is same as follows:

begin
  q = PrettyPrint.new(output, maxwidth, newline, &genspace)
  ...
  q.flush
  output
end

Returns the path to the data store file.

As int is already an Integer, all these methods simply return the receiver.

Synonyms are to_int, floor, ceil, truncate.

Returns self.

Returns 1.

Returns the value as a rational. The optional argument eps is always ignored.

Looks up the first IP address for name.

Looks up all IP address for name.

Looks up the first IP address for name.

Looks up all IP address for name.

Returns a new set that is a copy of the set, flattening each containing set recursively.

Equivalent to Set#flatten, but replaces the receiver with the result in place. Returns nil if no modifications were made.