Let's say I have a function, alt:
(defn alt [& functions]
(fn [tokens]
(some #(% tokens) functions)))
It creates a function from a bunch of sub-functions that accepts one
collection of tokens and figures out which sub-function returns a true
value when the tokens are plugged into it.
Is there a way to change alt—maybe to a macro—that lazily evaluates
the functions? This is so that with:
(defn a-meta-meta-function [c]
(alt (sub-function1 c) (sub-function2 c) (sub-function3 c)))
...calling ((a-meta-meta-function foo) some-tokens) doesn't evaluate
(sub-function 2 c) and (sub-function3 c) until needed to receive some-
tokens.
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