char=? -- r7rs Definition

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Kind

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comparator;

Implemented by

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• char=? (from vonuvoli);

Procedure signature

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Procedure variants:

• ((character |2...|) -> (boolean))
  • inputs:
    • a value of type character;
    • ... -- at least 2 times;
  • output: a value of type boolean;

Exports

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• scheme:base -- (scheme base);

Exports recursive

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• scheme -- (scheme);

Description

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(char=? char_1 char_2 char_3 ...)
(char<? char_1 char_2 char_3 ...)
(char>? char_1 char_2 char_3 ...)
(char<=? char_1 char_2 char_3 ...)
(char>=? char_1 char_2 char_3 ...)

These procedures return #t if the results of passing their arguments to char->integer are respectively equal, monotonically increasing, monotonically decreasing, monotonically non-decreasing, or monotonically non-increasing.

These predicates are required to be transitive.

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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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• character;
• boolean;