open-stream-p

open-stream-p Function

Syntax:

open-stream-p stream → generalized-boolean

Arguments and Values:

stream—a stream.

generalized-boolean—a generalized boolean.

Description:

Returns true if stream is an open stream; otherwise, returns false.

Streams are open until they have been explicitly closed with close, or until they are implicitly closed due to exit from a with-output-to-string, with-open-file, with-input-from-string, or with-open-stream form.

Examples:

(open-stream-p \*standard-input\*) → true 

Affected By:

close.

Exceptional Situations:

Should signal an error of type type-error if stream is not a stream.

Expanded Reference: open-stream-p

tip

TODO: Please contribute to this page by adding explanations and examples

(open-stream-p )