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Programming-Idioms

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  • Haskell

Idiom #264 Automated passing of array bounds

Pass a two-dimensional integer array a to a procedure foo and print the size of the array in each dimension. Do not pass the bounds manually. Call the procedure with a two-dimensional array.

foo :: [[a]] -> IO ()
foo a = print (length a, length $ head a)

main :: IO ()
main = foo [[1, 2, 3], [4, 5, 6]]
foo(List<List<int>> a) => print("${a.length} ${a[0].length}");
var a = [
    [1, 2],
    [3, 4],
    [5, 6]
  ];
foo(a);

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tkoenig