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Sam Nolan 2022-04-08 16:59:15 +10:00
parent d6e18b1c4f
commit b8d07bd8a4
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packages/squiggle-lang/src/rescript/Utility/E.res
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@ -443,6 +443,8 @@ module A = {
let mean = a => sum(a) /. (Array.length(a) |> float_of_int) let mean = a => sum(a) /. (Array.length(a) |> float_of_int)
let random = Js.Math.random_int let random = Js.Math.random_int
// Gives an array with all the differences between values
// diff([1,5,3,7]) = [4,-2,4]
let diff = (arr: array<float>): array<float> => let diff = (arr: array<float>): array<float> =>
Belt.Array.zipBy(arr, Belt.Array.sliceToEnd(arr, 1), (left, right) => right -. left) Belt.Array.zipBy(arr, Belt.Array.sliceToEnd(arr, 1), (left, right) => right -. left)