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tyo(+Stream, +Ascii)

The character represented by the ascii integer Ascii is put onto the output stream Stream in raw mode.
Stream
Integer (stream number) or Atom (reserved or user-defined symbolic stream name).
Ascii
Integer.

Description

Puts the character represented by the integer ASCII code Ascii (in the range 0 to 255) onto the output stream Stream in raw mode.

If the stream is a terminal, the tyo/2 output goes directly to the stream, whereas the output from put/2 is buffered first, and is only output to the stream when the output is flushed (e.g. explicitly using flush/1).

If the stream is not a terminal, tyo/2 behaves like put/2.

ASCII codes for the non-printable characters (i.e. control characters) are also acceptable.

Modes and Determinism

Exceptions

(4) instantiation fault
Stream is not instantiated.
(4) instantiation fault
Ascii is not instantiated.
(5) type error
Stream is neither an integer nor an atom.
(5) type error
Ascii is instantiated, but not to an integer.
(192) illegal stream mode
Stream is not an output stream.
(193) illegal stream specification
Stream is an illegal stream specification.

Examples

   Success:
      [eclipse]: set_stream(screen,output),
      > tyo(screen,91),tyo(screen,97),
      > tyo(screen,93).
      [a]
      yes.

      [eclipse]: put(screen, 0'a), tyo(screen, 0'b),
      > put(screen, 0'c), tyo(screen, 0'd).
      bdac
      yes.

      [eclipse]: write(screen,i), tyo(screen, 0'h).
      hi
      yes.

Error:
      tyo(Stream,A).                (Error 4).
      tyo(output,a).                (Error 5).
      tyo(98.0,output).             (Error 5).
      tyo("string", A).             (Error 5).
      tyo(11,97).                   (Error 192).
      tyo(atom,97).                 (Error 193).



See Also

tyi / 1, tyi / 2, tyo / 1