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String concatenation in MySQL

I am using MySQL and MySQL Workbench 5.2 CE. When I try to concatenate 2 columns, last_name and first_name , it doesn't work : ...
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How do I make Git treat a file as binary?

Having a problem with a medium sized project where visual studio project files keep having issues due to git treating them as text and merging. I'd like to just set the file as binary so that git won't auto merge these files ever. ...
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Is inject the same thing as reduce in ruby?

I saw that they were documented together here . Are they the same thing? Why does Ruby have so many aliases (such as map/collect for arrays)? Thanks a lot. ...
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What does T&& (double ampersand) mean in C++11?

I've been looking into some of the new features of C++11 and one I've noticed is the double ampersand in declaring variables, like T&& var . ...
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Eclipse debugger always blocks on ThreadPoolExecutor without any obvious exception, why?

I'm working on my usual projects on Eclipse, it's a J2EE application, made with Spring, Hibernate and so on. I'm using Tomcat 7 for this (no particular reason, I don't exploit any new feature, I just wanted to try that). Every time I debug my application, it happens that Eclipse debugger pops out li...
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Refresh all files in buffer from disk in vim

The command to refresh a file from version on disk is :e! 5 Answers 5 ...
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image.onload event and browser cache

I want to create an alert box after an image is loaded, but if the image is saved in the browser cache, the .onload event will not be fired. ...
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Is PHP's count() function O(1) or O(n) for arrays?

Does count() really count the all the elements of a PHP array, or is this value cached somewhere and just gets retrieved? ...
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Human readable javascripts in chrome developer tools

does anybody know whether Chrome Developer Tools can format javascripts into human readable form ? Some kind of beautifier would be handy. Let say that I'm using some JS library and I need to instantiate its object, so that I should know what to put into constructor. But searching through this huge ...
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Android: TextView automatically truncate and replace last 3 char of String

If a String is longer than the TextView 's width it automatically wraps onto the next line. I can avoid this by using android:singleLine (deprecated) or by setting android:inputType="text" . What I need now is something that replaces the last 3 characters of my String with " ... ". Since I'm...