Results for: "Pathname"

Returns true if the ipaddr is a private address. IPv4 addresses in 10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16 as defined in RFC 1918 and IPv6 Unique Local Addresses in fc00::/7 as defined in RFC 4193 are considered private.

Returns true iff the current severity level allows for the printing of FATAL messages.

Log a FATAL message.

See info for more information.

Creates a matrix where the diagonal elements are composed of values.

Matrix.diagonal(9, 5, -3)
  =>  9  0  0
      0  5  0
      0  0 -3

Returns the adjugate of the matrix.

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

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

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

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

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

Returns the determinant of the matrix.

Beware that using Float values can yield erroneous results because of their lack of precision. Consider using exact types like Rational or BigDecimal instead.

Matrix[[7,6], [3,9]].determinant
  => 45

deprecated; use Matrix#determinant

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

Returns the imaginary part 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]].imaginary
  =>   2i  i  0
        0  0  0

Creates a vector from an Array. The optional second argument specifies whether the array itself or a copy is used internally.

Initializes a new instance and evaluates the optional block in context of the instance. Arguments args are passed to new, see there for description of parameters.

This method is deprecated, its behavior corresponds to the older new method.

Parses command line arguments argv in order when environment variable POSIXLY_CORRECT is set, and in permutation mode otherwise.

Same as parse, but removes switches destructively. Non-option arguments remain in argv.

Parses environment variable env or its uppercase with splitting like a shell.

env defaults to the basename of the program.

Returns the number of elements in the match array.

m = /(.)(.)(\d+)(\d)/.match("THX1138.")
m.length   #=> 5
m.size     #=> 5