参考代码1:
using System;
using System.Collections.Generic;
using System.Linq;
namespace FuncActionDemo
{
class FuncActionTest
{
public void Test1(List<int> data, Func<int, bool> filter)
{
var result = data.Where(x => filter(x)).ToList();
result.ForEach(x =>
{
Console.WriteLine(x);
}
);
}
public void Test2(List<int> data, Action<int, int> action)
{
var d = data.OrderBy(x => x).ToList();
action(d[0], d[1]);
}
public void Test3(List<int> data, Func<int, int,int> func)
{
var d = data.Where(x => x%2==1).ToList();
int iOddAccSum= d.Aggregate(func);
Console.WriteLine("Odd Acc Sum:"+iOddAccSum.ToString());
}
}
class Program
{
static void Main(string[] args)
{
FuncActionTest faTest = new FuncActionTest();
List<int> data = new List<int> { 1, 2, 4, 7, 8, 9 };
faTest.Test1(data, x => {
if (x % 2 == 0)
return true;
else
return false;
});
faTest.Test1(data, x => { return FilterEven(x); });
faTest.Test1(data, FilterEven);
Console.WriteLine("-----------");
faTest.Test2(data, Add);
faTest.Test3(data,Acc);
}
static bool FilterEven(int s)
{
if (s % 2 == 0)
return true;
else
return false;
}
static void Add(int a, int b)
{
Console.WriteLine(a + b);
}
static int Acc(int a, int b)
{
return a * 10 + b;
}
}
}
参考代码2:
using System;
using System.Linq; namespace AggregateDemo
{
class Program
{
static void Main(string[] args)
{
string[] words = new string[] { "My", "Name", "Is", "Zhang San" };
string s = words.Aggregate((a, n) => a + " " + n);
Console.WriteLine(s); int[] ints = new int[] { 1,2,3,4,5,6};
int iSum = ints.Aggregate(1000,(a, b) => a*10+b);
Console.WriteLine(iSum);
}
}
}
参考代码3:
