write -- r7rs Definition

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Kind

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procedure;

Implemented by

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• write (from vonuvoli);

Procedure signature

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Procedure variants:

• ((value) -> (undefined))
  • input: a value of type value;
  • output: a value of type undefined;
• ((value textual-output-port-open) -> (undefined))
  • inputs:
    • a value of type value;
    • a value of type textual-output-port-open;
  • output: a value of type undefined;

Exports

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• scheme:write -- (scheme write);

Exports recursive

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• scheme -- (scheme);

Description

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(write obj)
(write obj port)

Writes a representation of obj to the given textual output port. Strings that appear in the written representation are enclosed in quotation marks, and within those strings backslash and quotation mark characters are escaped by backslashes. Symbols that contain non-ASCII characters are escaped with vertical lines. Character objects are written using the #\ notation.

If obj contains cycles which would cause an infinite loop using the normal written representation, then at least the objects that form part of the cycle must be represented using datum labels as described in section on datum labels. Datum labels must not be used if there are no cycles.

Implementations may support extended syntax to represent record types or other types that do not have datum representations.

The write procedure returns an unspecified value.

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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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• value;
• undefined;
• textual-output-port-open;