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Referring to a Column Alias in a WHERE Clause

...ire SELECT including aliases, is applied after the WHERE clause.) But, as mentioned in other answers, you can force SQL to treat SELECT to be handled before the WHERE clause. This is usually done with parenthesis to force logical order of operation or with a Common Table Expression (CTE): Parenthe...
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In Android EditText, how to force writing uppercase?

...set all other attributes which were set via XML (i.e. maxLines, inputType,imeOptinos...). To prevent this, add you Filter(s) to the already existing ones. InputFilter[] editFilters = <EditText>.getFilters(); InputFilter[] newFilters = new InputFilter[editFilters.length + 1]; System.arraycopy(...
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How to handle initializing and rendering subviews in Backbone.js?

...Backbone is great because of the lack of assumptions it makes, but it does mean you have to (decide how to) implement things like this yourself. After looking through my own stuff, I find that I (kind of) use a mix of scenario 1 and scenario 2. I don't think a 4th magical scenario exists because, si...
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Quick unix command to display specific lines in the middle of a file?

... an issue with a server and my only log file is a 20GB log file (with no timestamps even! Why do people use System.out.println() as logging? In production?!) ...
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How to check if a file is empty in Bash?

I have a file called diff.txt. Want to check if it is empty. Did something like this but couldn't get it working. 10 Answe...
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PHP: Convert any string to UTF-8 without knowing the original character set, or at least try

... What you're asking for is extremely hard. If possible, getting the user to specify the encoding is the best. Preventing an attack shouldn't be much easier or harder that way. However, you could try doing this: iconv(mb_detect_encoding($text, mb_detect_or...
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How do I create a folder in a GitHub repository?

...o create another folder Click on New file On the text field for the file name, first write the folder name you want to create Then type /. This creates a folder You can add more folders similarly Finally, give the new file a name (for example, .gitkeep which is conventionally used to make Git track ...
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How to detect the screen resolution with JavaScript?

...Height window.screen.availWidth update 2017-11-10 From Tsunamis in the comments: To get the native resolution of i.e. a mobile device you have to multiply with the device pixel ratio: window.screen.width * window.devicePixelRatio and window.screen.height * window.devicePixelRatio. This will also w...
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Run a single test method with maven

... To run a single test method in Maven, you need to provide the command as: mvn test -Dtest=TestCircle#xyz test where TestCircle is the test class name and xyz is the test method. Wild card characters also work; both in the method name and clas...
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javac : command not found

... You installed the Java Runtime Environment (JRE) only, which does not contain javac. For javac, you have to install the OpenJDK Development Environment. You can install java-devel or java-1.6.0-openjdk-devel, which both include javac. By the way: you c...