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What does the question mark in Java generics' type parameter mean?
... page 139. The same chapter from the 2nd Edition is available online as a PDF; the part on bounded wildcards is Item 28 starting on page 134.
Update: PDF link was updated since Oracle removed it a while back. It now points to the copy hosted by the Queen Mary University of London's School of Elec...
How to Sync iPhone Core Data with web server, and then push to other devices? [closed]
...egy discussed by Dan Grover at iPhone 2009 conference, available here as a pdf document.
This is a viable solution and is not that difficult to implement (Dan implemented this in several of its applications), overlapping the solution described by Chris. For an in-depth, theoretical discussion of sy...
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...tension"]);
// Determine Content Type
switch ($ext) {
case "pdf": $ctype="application/pdf"; break;
case "exe": $ctype="application/octet-stream"; break;
case "zip": $ctype="application/zip"; break;
case "doc": $ctype="application/msword"; break;
case "xls": $ct...
Are Exceptions in C++ really slow
...aware that Pyhon has a finally-clause for exception handling. this means a Python implementation either has stack unwinding or is not Python. you appear to be completely ignorant of the subjects that you make (fantasy) claims about. sorry.
– Cheers and hth. - Alf
...
Can I protect against SQL injection by escaping single-quote and surrounding user input with single-
... the subject:
http://www.imperva.com/docs/WP_SQL_Injection_Protection_LK.pdf
http://www.it-docs.net/ddata/4954.pdf (Disclosure, this last one was mine ;) )
https://www.owasp.org/images/d/d4/OWASP_IL_2007_SQL_Smuggling.pdf (based on the previous paper, which is no longer available)
Point is, any ...
How can I multiply and divide using only bit shifting and adding?
...
I translated the Python code to C. The example given had a minor flaw. If the dividend value that took up all the 32 bits, the shift would fail. I just used 64-bit variables internally to work around the problem:
int No_divide(int nDivisor, ...
新浪微博 阿里巴巴囊中物？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...公司18%的股份，成为新浪的第二大股东。目前，阿里持有从新浪剥离出来的微博公司32%股权。
在分析人士看来，从对优酷土豆的资本运作来看，阿里采取了先入股后全资收购的做法，从这点来看，它也同样可能对新浪微博采取...
Mysql substr和Oracle substr区别 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
Mysql substr和Oracle substr区别Oracle substr(字符串，开始索引、从0起，长度)Mysql substr或substring(字符串，开始索引、从1起，长度)Oracle substr(字符串，开始索引、从0起，长度)
Mysql substr或substring(字符串，开始索引、从1起，长度)Mysql Orac...
mongodb, replicates and error: { “$err” : “not master and slaveOk=f...
...r and slaveOk=false”, “code” : 13435出现这个错误的原因是在从库上执行命令导致，默认情况下只有主库可以执行命令。当然可以通过设置使得从库也能执行命令，具体参见：http: s 出现这个错误的原因是在从库上执行命令导致，...
浅谈服务器单I/O线程＋工作者线程池模型架构及实现要点 - 更多技术 - 清泛...
...epoll并等待，有I/O请求（socket）到达时，将其加入epoll并从线程池中取一个空闲工作者线程，将实际的任务交由工作者线程处理。
伪码：
创建一个epoll实例;
while(server running)
{
epoll等待事件;
if(新连接到达且是有效连接...