method

empty

v1_9_3_392 - Show latest stable - Class: Matrix

empty(row_size = 0, column_size = 0)

public

Creates a empty matrix of row_size x column_size. At least one of row_size or column_size must be 0.

m = Matrix.empty(2, 0)
m == Matrix[ [], [] ]
  => true
n = Matrix.empty(0, 3)
n == Matrix.columns([ [], [], [] ])
  => true
m * n
  => Matrix[[0, 0, 0], [0, 0, 0]]

# File lib/matrix.rb, line 287
  def Matrix.empty(row_size = 0, column_size = 0)
    Matrix.Raise ArgumentError, "One size must be 0" if column_size != 0 && row_size != 0
    Matrix.Raise ArgumentError, "Negative size" if column_size < 0 || row_size < 0

    new([[]]*row_size, column_size)
  end

empty

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