11.3.55 current_stream/3

Synopsis

current_stream(?AbsFile, ?Mode, ?Stream)

Stream is a stream, which is currently open on file AbsFile in mode Mode.

Arguments

AbsFile

atom

Absolute filename.

Mode

for streams opened with open/[3,4] this is one of [read, write, append]. For other streams Mode may have other values.

Stream

stream_object

Description

• None of the arguments need be initially instantiated.
• Ignores certain pre-defined streams, e.g. the streams initially associated with user_input, user_output and user_error will not be recognized or generated by current_stream/3.

  This is unlike stream_property/3, which can backtrack over all streams, including the pre-defined ones.

Backtracking

Can be used to backtrack through all open streams.

See Also

open/[3,4], ref-iou-sfh.