export {min, max, fold}

function min(uint a, uint b) returns (uint)
{
    return a < b ? a : b;
}

function max(uint a, uint b) returns (uint)
{
    return a > b ? a : b;
}


// Problems here:
// - we need another definition for calldata or storage arrays. We could also say that the
//   data location needs to be part of the templat etype, but then we cannot just
//   replace `T`, since memory has to go after the `[]`.
// - the state mutability of the function type cannot be specified.
function fold[T, V, F](
    T[] memory _array, V memory initial,
    function(V memory, T memory) returns (V memory) f
) returns (V memory result) {
    result = initial;
    for (uint i = 0; i < _array.length; i++)
        result = f(result, _array[i]);
}