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Why must a lambda expression be cast when supplied as a plain Delegate parameter
...keRequired code pattern are very helpful.
– Erik Philips
Jan 9 '13 at 1:12
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write a shell script to ssh to a remote machine and execute commands
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There are multiple remote linux machines, and I need to write a shell script which will execute the same set of commands in each machine. (Including some sudo operations). How can this be done using shell scripting?
You can do this with ...
Connect Java to a MySQL database
... default 3306.
Download the JDBC driver and put in classpath, extract the ZIP file and put the containing JAR file in the classpath. The vendor-specific JDBC driver is a concrete implementation of the JDBC API (tutorial here).
If you're using an IDE like Eclipse or Netbeans, then you can add it to...
How to configure socket connect timeout
When the Client tries to connect to a disconnected IP address, there is a long timeout over 15 seconds... How can we reduce this timeout? What is the method to configure it?
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How to get execution time in rails console?
...be better to add another answer or comment with reference to the benchmark-ips gem? You've done quite a big edit to the answer there which changes it significantly and rather reduces the appropriateness of the votes on it already.
– Shadwell
Jan 2 '17 at 13:01
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只有程序员能看懂的笑话 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...这个飞机用的是你的团队开发的Beta版软件，你会下飞机吗？” 九个软件工程师举了手。老师看着第十个问道：“你为什么愿意留在飞机上？”这人回答说：“如果是我的团队写的这个软件，飞机根本无法起飞，根本谈不上坠毁...
笑话几则 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...到。三个人正发愁，忽然悟空问：“师父这个月房贷交了吗？”沙僧说：“没有。”“养路费交了吗？”“也没有。”悟空说：“都洗洗睡吧，师父跑不了，有银行跟交警看着呢！”
科比惊呆了
一位中国学生问科比:“请问...
蜘蛛的故事 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...你可还好，一千年前的那个问题，你可有什么更深的认识吗？”蜘蛛说：“我觉得世间最珍贵的是‘得不到’和‘已失去’。”佛主说：“你再好好想想，我会再来找你的。”
又过了一千年，有一天，刮起了...
浮点数在内存中的表示 - C/C++ - 清泛网 - 专注IT技能提升
...会经常遇到考察浮点数与零比较的问题，是简单的 f == 0 吗？当然不是，正确的写法应该是f > -1e-7 && f < 1e-7，为什么呢？
浮点型，由于精度关系（float精度：2^23 = 8388608，一共7位，同理double 16位），最小分辨0.0000001， 当存储一...
高效使用STL容器小tip - C/C++ - 清泛网 - 专注C/C++及内核技术
... != 0 ){……}
while( ! c.empty() ){……}
这两种方式有区别吗？当然有区别，对于任一种类型的容器，应该使用 empty() 成员函数来判断是不是空，因为对于所有标准容器，empty() 都是常数时间操作，只返回size是否为0，所以常被实...