5.11 The STREAMS module
stream-input-available?
Open generic function
Summary
Tests if an input stream can be read.
Signature
stream-input-available? input-stream => available?
Arguments
- input-stream
- An instance of
<stream>.
Values
- available?
- An instance of
<boolean>.
Library
io
Module
streams
Description
Returns #t if input-stream would not block on read-element, otherwise it returns #f.
This function differs from stream-at-end?. When stream-input-available? returns #t, read-element will not block, but it may detect that it is at the end of the stream's source, and consequently inspect the on-end-of-stream argument to determine how to handle the end of stream.