How would one convert the following procedural logic into
functional/Clojure?
x = expensive-calculation
return (f1(x), f2(x), f3(x))
I'm sure I could force it by using a var to save the intermediate value,
but that's still procedural. It seems like the pattern of reusing an
expensive result in multiple function calls without recalculating it must
have a functional approach, but I'm not finding it.
What I really want to do is to return:
{:key1 f1(f0(x)), :key2 f2(f0(x)), :key3 f3(f0(x))}
without paying the price of executing f0 multiple times.
Tnx.
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