17 The STREAM package

stream-peek-char

Generic Function

Summary

A generic function used bypeek-char that returns a character on a given stream without removing it from the stream buffer.

Package

stream

Signature

stream-peek-char stream => result

Arguments

stream: A stream.

Values

result: A character or:EOF symbol.

Description

The generic functionstream-peek-char is used to implementpeek-char, and corresponds to a peek-type ofnil. The default method reads a character from the stream without removing it from the stream buffer, by usingstream-read-char andstream-unread-char.