using System; |
using System.IO; |
using System.Linq; |
using System.Threading.Tasks; |
class Program |
{ |
static void Main() |
{ |
// Return a value type with a lambda expression |
Task task1 = Task.Factory.StartNew ( () => 1 ); |
int i = task1.Result; |
// Return a named reference type with a multi-line statement lambda. |
Task task2 = Task.Factory.StartNew ( () => |
{ |
string s = ".NET" ; |
double d = 4.0; |
return new Test { Name = s, Number = d }; |
} ); |
Test test = task2.Result; |
// Return an array produced by a PLINQ query |
Task task3 = Task.Factory.StartNew ( () => |
{ |
string path = @"C:\users\public\pictures\" ; |
string [] files = Directory.GetFiles(path); |
var result = (from file in files.AsParallel() |
let info = new FileInfo(file) |
where info.Extension == ".jpg" |
select file).ToArray(); |
return result; |
}); |
foreach (var name in task3.Result) |
Console.WriteLine(name); |
} |
class Test |
{ |
public string Name { get ; set ; } |
public double Number { get ; set ; } |
} |
} |
by: 发表于:2018-01-31 15:12:47 顶(0) | 踩(0) 回复
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