On Friday, 3 March 2017 at 11:22:37 UTC, Dukc wrote: > [snip] correction: > assert(iota(5).lookAhead(1, 2).array == > [ [0, 1], > [0, 1, 2], > [0, 1, 2, 3], > [1, 2, 3, 4], > [2, 3, 4] > ]);