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TCPClient TCP客户端扩展：连接TCP服务器进行文本消息通信 · App Inventor 2 中文网
...鼠标移动时拖动元素 document.onmousemove = function(e) { if (!isDragging) return; element.style.left = (e.clientX - offsetX) + 'px'; element.style.top = (e.clientY - offsetY) + 'px'; }; // 鼠标释放时停止拖动 document.onmouseup = function(...
Base64 length calculation?
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Consider if you have one byte of input. That will produce four characters of output. But only two output characters are needed to encode the input. So two characters will be padding.
– David Schwartz
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Insert line after first match using sed
... about inserting a choice line of text after the first line matching a specific string using the sed command. I have ...
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How to subtract 30 days from the current datetime in mysql?
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SELECT * FROM table
WHERE exec_datetime BETWEEN DATE_SUB(NOW(), INTERVAL 30 DAY) AND NOW();
http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-add
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Disabling swap files creation in vim
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Swap files are good if your editor crashes though (power outage etc.), just keep in mind.
– koonse
Mar 3 '15 at 2:52
2
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Executing JavaScript without a browser?
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I found this related question on the topic, but if you want direct links, here they are:
You can install Rhino as others have pointed out. This post shows an easy way to get it up and running and how to alias a command to invoke it easily
If you're on a Mac, you can use ...
How can I show hidden files (starting with period) in NERDTree?
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Press I (Shift+i) to toggle hidden files in the NERDTree explorer window.
To enable this behavior by default, add this line to your .vimrc file:
let NERDTreeShowHidden=1
For more detail, access the NERDTree help file :help NERD_tree...
iPhone Debugging: How to resolve 'failed to get the task for process'?
I have just added a provisioning profile to XCode (needed to support notifications and in app purchase), setup as needed the build configuration for ad hoc distribution, and tried to run the app on the device (I have done this several times in the past, without any problem).
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Get the time difference between two datetimes
I know I can do anything and some more envolving Dates with momentjs. But embarrassingly, I'm having a hard time trying to do something that seems simple: geting the difference between 2 times.
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android asynctask sending callbacks to ui [duplicate]
...}
EDIT
Since this answer got quite popular, I want to add some things.
If you're a new to Android development, AsyncTask is a fast way to make things work without blocking UI thread. It does solves some problems indeed, there is nothing wrong with how the class works itself. However, it brings s...