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Dilemma: when to use Fragments vs Activities:

.... In the beginning this will not have any sense, but in time, you will actually be able to tell if you need Fragment or not. There is a good practice I found very helpful for me. It occurred to me while I was trying to explain something to my daughter. Namely, imagine a box which represents a sc...
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What is a “translation unit” in C++

... A translation unit is for all intents and purposes a file (.c/.cpp), after it's finished including all of the header files. http://msdn.microsoft.com/en-us/library/bxss3ska%28VS.80%29.aspx ...
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How to get the body's content of an iframe in Javascript?

...t try contentWindow.document. Select elements in iframe Then you can usually use getElementById() or even querySelectorAll() to select the DOM-Element from the iframeDocument: if (!iframeDocument) { throw "iframe couldn't be found in DOM."; } var iframeContent = iframeDocument.getElementByI...
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Convert Unix timestamp to a date string

...ecognizes neither -d nor -r and provides no standard way in any command at all (that I know of) to format a Unix time from the command line (since POSIX Awk also lacks strftime()). (You can't use touch -t and ls because the former does not accept a time given as seconds since the Unix Epoch.) Note...
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How to log something in Rails in an independent log file?

... If you want to change all the default logging for that specific model, you can simply use User.logger = Logger.new(STDOUT) or wherever you want to log to. In the same way, ActiveRecord::Base.logger = Logger.new(STDOUT) will change all the logging ...
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What is a non-capturing group in regular expressions?

... Group 4: "sectetuer" ... So, if we apply the substitution string: $1_$3$2_$4 ... over it, we are trying to use the first group, add an underscore, use the third group, then the second group, add another underscore, and then the fourth group. The resulting string would be like the one below....
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Disabling user selection in UIWebView

...mobile web documents <style type="text/css"> * { -webkit-touch-callout: none; -webkit-user-select: none; /* Disable selection/copy in UIWebView */ } </style> Programmatically load the following Javascript code: NSString * jsCallBack = @"window.getSelection().removeAllRanges()...
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Suppress or Customize Intro Message in Fish Shell

... A little nuance, but to have no greeting at all, just invoke the suggested set command. – gitness Aug 21 '19 at 0:14 add a comment ...
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PDB文件:每个开发人员都必须知道的 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...入GAC的.NET的binary,需要将PDB文件拷贝到C:\Windows\assembly\GAC_MSIL\Example\1.0.0.0__682bc775ff82796a类似的binary所在的目录。另一个变通的方法是定义环境变量DEVPATH,从而代替使用命令GACUTIL将binary放入GAC中。在定义DEVPATH后,只需要将binary和...
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What is the difference between max-device-width and max-width for mobile web?

... actual device screen Same goes for max-height and max-device-height naturally. share | improve this answer | follow | ...