Generate all possible modes of list

[Eiji]

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Generate all combinations having a fixed array size

Hi, I’m trying to solve a problem where I want to generate all possible combinations from an array, with at most n elements. I was looking at this thread today: Most elegant way to generate all permutations? where this really nice solution was proposed by @OvermindDL1: def permutations([]), do: [[]] def permutations(list), do: for elem <- list, rest <- permutations(list--[elem]), do: [elem|rest] So, I was trying to adapt this code to generate combinations with a fixed number of elements. Exam…