input-port-open? -- r7rs Definition

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Kind

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predicate;

Extended by

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• input-port-open? (from vonuvoli);

Procedure signature

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Procedure variants:

• ((input-port-open) -> (true))
  • input: a value of type input-port-open;
  • output: a value of type true;
• ((input-port) -> (false))
  • input: a value of type input-port;
  • output: a value of type false;
• ((port) -> (false))
  • input: a value of type port;
  • output: a value of type false;
• ((any) -> (false))
  • input: a value of type any;
  • output: a value of type false;

Exports

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• scheme:base -- (scheme base);

Exports recursive

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• scheme -- (scheme);

Description

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(input-port-open? port)
(output-port-open? port)

Returns #t if port is still open and capable of performing input or output, respectively, and #f otherwise.

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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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• input-port-open;
• true;
• input-port;
• false;
• port;
• any;