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mikeacjones/Powerset.dwl

Last active April 19, 2023 17:22
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Function to return the power set - requires Bitwise.dwl (also in gist)
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Powerset.dwl
%dw 2.0
import Bitwise
fun powerSet(set: Array) = do {
var iterable = (0 to pow(2,sizeOf(set))-1) as Array
---
iterable map (item) -> set filter (Bitwise::AND(item,pow(2,$$)) != 0)
}
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mikeacjones commented Apr 19, 2023 •
edited
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This does work; dataweave is not usually compiled. Keep in mind that you also have to include the Bitwise.dwl file.

https://gist.github.com/mikeacjones/b3c3719d38f2f075b95bd4960e2252b0

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