Aggregation functions in the Aggregate function in LINQ

Imagine that we have a list<int> array, and now we want to sum all the values in the list. It's easy to write the following code before you learn LINQ:

Static voidMain (string[] args) {List<int> array =Newlist<int> () {1,3,3,2,7,3,2,8,5,4,6 }; intsum =0; foreach(intIteminchArray) {Sum+=item; } Console.WriteLine (sum);}

Output is: 44

But LINQ provides us with an extension function, aggregate, which has three overloads, the simplest of which is to pass in a proxy of type Func<tsource, TSource, tsource> to the function. The following code shows how to use the extension function:

list<intnew list<int133273  28546  }; int 0  = array. Aggregate ((A, B) + A + B); Console.WriteLine (sum);

Again, the output is: 44

Aggregation functions in the Aggregate function in LINQ