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How to write a bash script that takes optional input arguments?
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743
You could use the default-value syntax:
somecommand ${1:-foo}
The above will, as described ...
bundler vs RVM vs gems vs RubyGems vs gemsets vs system ruby [closed]
...ow, even if I'd never do it that way.) Thanks!
– user779159
Mar 23 '13 at 14:03
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vertical align middle in
...Mr. Alien
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Daylight saving time and time zone best practices [closed]
...umeric value, use Unix time - which is the number of whole seconds since 1970-01-01T00:00:00Z (excluding leap seconds). If you require higher precision, use milliseconds instead. This value should always be based on UTC, without any time zone adjustment.
If you might later need to modify the times...
Split data frame string column into multiple columns
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hadleyhadley
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2
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BIO与NIO、AIO的区别(这个容易理解) - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...te方法都是异步的，完成后会主动调用回调函数。 在JDK1.7中，这部分内容被称作NIO.2，主要在Java.nio.channels包下增加了下面四个异步通道：
AsynchronousSocketChannel
AsynchronousServerSocketChannel
AsynchronousFileChannel
AsynchronousDatagramChannel
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MySQL with Node.js
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427
Check out the node.js module list
node-mysql — A node.js module implementing the MySQL proto...
How to remove folders with a certain name
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Ulf Lindback
12.3k33 gold badges3737 silver badges3030 bronze badges
answered Oct 23 '12 at 14:29
pistachepistache
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How to open a web page from my application?
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272
System.Diagnostics.Process.Start("http://www.webpage.com");
One of many ways.
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What exactly can cause an “HIERARCHY_REQUEST_ERR: DOM Exception 3”-Error?
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227
It means you've tried to insert a DOM node into a place in the DOM tree where it cannot go. The ...