Returns the ARGV array, which contains the arguments passed to your script, one per element.
For example:
$ ruby argf.rb -v glark.txt ARGF.argv #=> ["-v", "glark.txt"]
Reads the next character from ARGF and returns it as a String. Raises an EOFError after the last character of the last file has been read.
For example:
$ echo "foo" > file $ ruby argf.rb file ARGF.readchar #=> "f" ARGF.readchar #=> "o" ARGF.readchar #=> "o" ARGF.readchar #=> "\n" ARGF.readchar #=> end of file reached (EOFError)
Writes string if inplace mode.
Returns the current filename. “-” is returned when the current file is STDIN.
For example:
$ echo "foo" > foo $ echo "bar" > bar $ echo "glark" > glark $ ruby argf.rb foo bar glark ARGF.filename #=> "foo" ARGF.read(5) #=> "foo\nb" ARGF.filename #=> "bar" ARGF.skip ARGF.filename #=> "glark"
Start tracing
Tracer.on # code to trace here Tracer.off
You can also pass a block:
Tracer.on { # trace everything in this block }
Returns a network byte ordered string form of the IP address.
Returns true iff the current severity level allows for the printing of WARN messages.
Sets the severity to WARN.
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
Creates an n by n diagonal matrix where each diagonal element is value.
Matrix.scalar(2, 5) # => 5 0 # 0 5
Returns true if this is a diagonal matrix. Raises an error if matrix is not square.
Returns true if this is a regular (i.e. non-singular) matrix.
Returns true if this is a singular matrix.
Returns true if this is a square matrix.
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