peek-u8 -- r7rs Definition

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Kind

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procedure;

Implemented by

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• peek-u8 (from vonuvoli);

Procedure signature

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Procedure variants:

• (() -> (byte-or-eof))
  • inputs: none;
  • output: a value of type byte-or-eof;
• ((binary-input-port-eof) -> (eof-object))
  • input: a value of type binary-input-port-eof;
  • output: a value of type eof-object;
• ((binary-input-port-open) -> (byte-or-eof))
  • input: a value of type binary-input-port-open;
  • output: a value of type byte-or-eof;

Exports

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• scheme:base -- (scheme base);

Exports recursive

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• scheme -- (scheme);

Description

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(peek-u8)
(peek-u8 port)

Returns the next byte available from the binary input port, but without updating the port to point to the following byte. If no more bytes are available, an end-of-file object is returned.

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The text herein was sourced and adapted as described in the "R7RS attribution of various text snippets" appendix.

Referenced-types

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• byte-or-eof;
• binary-input-port-eof;
• eof-object;
• binary-input-port-open;