File: thunk.el.html

Thunk provides functions and macros to delay the evaluation of forms.

Use thunk-delay to delay the evaluation of a form (requires lexical-binding), and thunk-force to evaluate it. The result of the evaluation is cached, and only happens once.

Here is an example of a form which evaluation is delayed:

    (setq delayed (thunk-delay (message "this message is delayed")))

delayed is not evaluated until thunk-force is called, like the following:

   (thunk-force delayed)

This file also defines macros thunk-let and thunk-let* that are analogous to let and let* but provide lazy evaluation of bindings by using thunks implicitly (i.e. in the expansion).

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