public static TAccumulator Sum <T, TAccumulator, TSummator>(this T[] array, Additive <TAccumulator, T, TSummator> initial)
where TSummator : struct, ISummator <TAccumulator, T>
{
var result = initial;
for (var i = 0; i < array.Length; i++)
{
result += array[i];
}
return(result);
}
public static T Sum <T, TSummator, TEnumerable, TEnumerator>(
this Enumerable <T, TEnumerator, TEnumerable> enumerable, Additive <T, TSummator> initial)
where TEnumerator : IEnumerator <T>
where TEnumerable : IEnumerable <T, TEnumerator>
where TSummator : struct, ISummator <T>
{
var result = initial;
foreach (var i in enumerable)
{
result += i;
}
return(result);
}