alert((![]+[])[+[]]+(![]+[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(![]+[])[!+[]+!+[]]);
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此代码的输出是:fail.为什么?
顺便说一句(![]+[])[+!+[]] == 'false'[1],对吗?但为什么![]+[] == "false"和为什么+!+[] == 1?
#include <gl\gl.h>
#include <gl\glu.h>
#include <gl\glaux.h>
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这是一个例子,但在哪里获得GL标题?
转到http://www.facebook.com/facebook?v=wall,然后单击信息选项卡.内容将被加载,地址栏现在变为http://www.facebook.com/facebook?v=info但网页没有重新加载.
起初我认为它是Ajax,但我的问题是,如何在不重新加载的情况下更改地址栏?我知道我可以使用JS更改锚点(#wall)但是querystring(?v = wall),怎么样?
这是我的脚本的网址: localhost/do/index.php
我想要一个变量或一个返回的函数localhost/do(类似的东西$_SERVER['SERVER_NAME'].'/do')
<?php
while(true){
//code goes here.....
}
?>
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我想制作一个PHP Web服务器,那么如何使用Curl使这个脚本永远运行?
我正在用Qt Creator编写一个c ++项目.一切正常(调试,发布),但是当我直接运行编译的.exe(转到exe文件并运行它)时,它说mingwm10.dll丢失了.
我该怎么办这个问题?
https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#projections
在参考文献中,他们只提到如何使用 JPQL 进行嵌套投影。
假设我有这些投影:
public interface ThreadWithContent {
Integer getId();
String getTitle();
UserSummary getAuthor();
}
public interface UserSummary {
Integer getId();
}
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如何使用本机查询通过投影查询线程,我尝试了以下方法:
@Query(value =
"select thread.id as id,thread.title as title,author.id as authorId "+
"from thread inner join users as author " +
"on thread.author_id = author.id " +
"where thread.id = ?1",nativeQuery = true)
ThreadWithContent getThreadsById(Integer threadID);
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但貌似Spring Data只能映射thread实体,而不能映射author实体
{
"title": "Recusandae nihil fugiat deserunt.",
"author": null,
"id": 5
}
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我已经尝试过author.id as authorId …
Count.java:
@Component
@Scope(value = "session",proxyMode = ScopedProxyMode.TARGET_CLASS)
public class Count {
Integer i;
public Count() {
this.i = 0;
}
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控制器:
@Controller
public class GreetingController {
@Autowired private Count count;
@RequestMapping("/greeting")
public String greetingForm(Model model) {
if(count.i == null) i == 0;
else i++;
model.addAttribute("count",String.valueOf(count.i));
return "greeting";
}
}
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但每次我运行这个控制器(/问候语),它甚至在我关闭浏览器时总是增加i,所以如何在Singleton Controller中使用这个Session Scoped Component?
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