//获取当前应用程序目录 var catalog =new AssemblyCatalog(typeof(MainPage).Assembly); //将目录装载进MEF组合容器 var parent =new CompositionContainer(catalog); //通过元数据过滤筛选出元数据名称为"UC"值为"CC"的组合部件 var filteredCat =new FilteredCatalog(catalog, def => def.Metadata.ContainsKey("UC") && def.Metadata["UC"].ToString() =="CC"); var perRequest =new CompositionContainer(filteredCat, parent); var control = perRequest.GetExportedValue<UserControl>();
web.xml报错
The content of element type "web-app" must match "(icon?,display-
name?,description?,distributable?,context-param*,filter*,filter-mapping*,listener*,servlet*,s
JUnit4:Test文档中的解释:
The Test annotation supports two optional parameters.
The first, expected, declares that a test method should throw an exception.
If it doesn't throw an exception or if it
借鉴网上的思路,用java实现:
public class NoIfWhile {
/**
* @param args
*
* find x=1+2+3+....n
*/
public static void main(String[] args) {
int n=10;
int re=find(n);
System.o
在Linux中执行.sh脚本,异常/bin/sh^M: bad interpreter: No such file or directory。
分析:这是不同系统编码格式引起的:在windows系统中编辑的.sh文件可能有不可见字符,所以在Linux系统下执行会报以上异常信息。
解决:
1)在windows下转换:
利用一些编辑器如UltraEdit或EditPlus等工具
Binary search tree works well for a wide variety of applications, but they have poor worst-case performance. Now we introduce a type of binary search tree where costs are guaranteed to be loga