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In MySQL what does “Overhead” mean, what is bad about it, and how to fix it?

...e used to run some of the queries, so you should only worry if this gets really high. You can compare 'Optimizing the table' with the defragmenting of your hard drive. I quote: Every database will, over time, require some form of maintenance to keep it at an optimal performance level....
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Prevent Default on Form Submit jQuery

... I believe that the above answers is all correct, but that doesn't point out why the submit method doesn't work. Well, the submit method will not work if jQuery can't get the form element, and jQuery doesn't give any error about that. If your script is placed i...
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AVD Manager - Cannot Create Android Virtual Device

I just installed the Android Eclipse Plugin and the Android SDK from Google yesterday. I open the AVD Manager window by going to Window -> Android Virtual Device Manager . I then click "New" and am presented with the "Create new Android Virtual Device (AVD)" window. The problem is, I can't get t...
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In what order do static/instance initializer blocks in Java run?

... or to access a static method or field. So, for multiple classes, this totally depends on the code that's run to cause those classes to get loaded. share | improve this answer | ...
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django templates: include and extends

...ngo doesn't know what to do with it. The Django documentation has a few really good examples of using blocks to replace blocks in the parent template. https://docs.djangoproject.com/en/dev/ref/templates/language/#template-inheritance ...
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Force “git push” to overwrite remote files

...gin master). Leaving off <remote> and <branch> will force push all local branches that have set --set-upstream. Just be warned, if other people are sharing this repository their revision history will conflict with the new one. And if they have any local commits after the point of change...
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How to detect Windows 64-bit platform with .NET?

...tPtr.Size), and if you are running in a 32-bit process, you still have to call the Win API function IsWow64Process. If this returns true, you are running in a 32-bit process on 64-bit Windows. Microsoft's Raymond Chen: How to detect programmatically whether you are running on 64-bit Windows My solut...
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Is SQL syntax case sensitive?

... are case-insensitive (SELECT, FROM, WHERE, etc), but are often written in all caps. However in some setups table and column names are case-sensitive. MySQL has a configuration option to enable/disable it. Usually case-sensitive table and column names are the default on Linux MySQL and case-insensit...
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How to hide action bar before activity is created, and then show it again?

...tActionBar().hide(); setContentView(R.layout.splash); // be sure you call this AFTER requestFeature This creates the ActionBar and immediately hides it before it had the chance to be displayed. But now there is another problem. After putting windowActionBar="false" in the theme, the Activity...
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How to disable action bar permanently

...which gives custom themes and no action bar, is to create a SuperClass for all activities in my project and in it's onCreate() call the following line of code - this.requestWindowFeature(Window.FEATURE_NO_TITLE); It always work for me. The only issue in this approach is, you'll see action bar fo...