make-promise -- r7rs Definition

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Kind

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constructor;

Implemented by

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• make-promise (from vonuvoli);

Procedure signature

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Procedure variants:

• ((any) -> (promise))
  • input: a value of type any;
  • output: a value of type promise;

Exports

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• scheme:lazy -- (scheme lazy);

Exports recursive

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• scheme -- (scheme);

Description

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(make-promise obj)

The make-promise procedure returns a promise which, when forced, will return obj. It is similar to delay, but does not delay its argument: it is a procedure rather than syntax. If obj is already a promise, it 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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• any;
• promise;