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Allegro CL |
ANSI Common Lisp  21 Streams 21.1 Stream Concepts
21.1.1 Introduction to StreamsA stream is an object that can be used with an input or output function to identify an appropriate source or sink of characters or bytes for that operation. A character stream is a source or sink of characters. A binary stream is a source or sink of bytes.Some operations may be performed on any kind of stream; the next figure provides a list of standardized operations that are potentially useful with any kind of stream.
Other operations are only meaningful on certain stream types. For example, read-char is only defined for character streams and read-byte is only defined for binary streams. |