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Why invoke Thread.currentThread.interrupt() in a catch InterruptException block?
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This is done to keep state.
When you catch the InterruptException and swallow it, you essentially prevent any higher level methods/thread groups from noticing the interrupt. Which may cause problems.
By calling Thread.currentThread().interrupt(), you set the interrupt flag of the thread, s...
How to change the port of Tomcat from 8080 to 80?
... Change the port=8080 value to port=80
4) Save file.
5) Stop your Tomcat and restart it.
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How to set caret(cursor) position in contenteditable element (div)?
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In most browsers, you need the Range and Selection objects. You specify each of the selection boundaries as a node and an offset within that node. For example, to set the caret to the fifth character of the second line of text, you'd do the following:
functi...
How can I use numpy.correlate to do autocorrelation?
I need to do auto-correlation of a set of numbers, which as I understand it is just the correlation of the set with itself.
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How do I use Wget to download all images into a single folder, from a URL?
I am using wget to download all images from a website and it works fine but it stores the original hierarchy of the site with all the subfolders and so the images are dotted around. Is there a way so that it will just download all the images into a single folder? The syntax I'm using at the moment i...
Format bytes to kilobytes, megabytes, gigabytes
...ytes. What's the best way to format this size info to kilobytes, megabytes and gigabytes? For instance I have an MP3 that Ubuntu displays as "5.2 MB (5445632 bytes)". How would I display this on a web page as "5.2 MB" AND have files less than one megabyte display as KB and files one gigabyte and abo...
Why use non-member begin and end functions in C++11?
Every standard container has a begin and end method for returning iterators for that container. However, C++11 has apparently introduced free functions called std::begin and std::end which call the begin and end member functions. So, instead of writing
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虚拟机安装CentOS出错：EDD:Error 8000 reading sector 2106934 - 环境配置...
EDD:Error 8000 reading sector 2106934
No DEFAULT or UI configuration directive found!
boot:
Getting closer!
When i start to install every thing seem to be fine.
1.Select language k
2.select location k
3.configure keyboard k
4.network config k
then it gets stuck on a purple screen with n...
AlphaDialog 对话框扩展 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
Alpha Dialog 是一个简单但功能强大且易于使用的扩展，您可以在项目中自由使用它来创建令人惊叹且独特的对话框。 该扩展允许您创建透明对话框、全屏对话框，并且通过使用非常简单的技术，您可以使用自定义颜色进行变暗。
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用户反馈文本输入框光标问题 - 用户反馈 - 清泛IT社区，为创新赋能！
还有一个问题，我用老巫婆那个网站 和现在的同样工程对比如下 ：  1、老巫婆光标会自动退出  2、老巫婆串口通信350MS一次 不会死机  现在的1000MS 才不会死机.
感觉使用起来， 没有他那个网站好...