latch
Introduction
Allows evaluating expressions just once.
Usage
(require-extension latch)
Requirements
Documentation
- (let-once ((IDENTIFIER EXPR) ...) BODY ...) syntax
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.
- (let*-once ((IDENTIFIER EXPR) ...) BODY ...) syntax
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