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latch
Introduction
Allows evaluating expressions just once.
Usage
(require-extension latch)
Requirements
Documentation
[syntax] (let-once ((IDENTIFIER EXPR) ...) BODY ...)Binds IDENTIFIER to the result of evaluating EXPR and evaluates BODY. On any subsequent evaluation of the let-once form, the result of EXPR is re-used and evaluation of EXPR is skipped.
[syntax] (let*-once ((IDENTIFIER EXPR) ...) BODY ...)Like let-once, but binds sequentially (just like let*).
Author
License
This code is placed into the public domain.
Version History
- 0.1
- initial release