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Gem::LoadError for mysql2 gem, but it's already in Gemfile

...eptember 2015 so use the above line in your Gem file and run: bundle install You should be good to go share | improve this answer | follow | ...
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Is element block level or inline level?

...ed" elements, since they do not have content per se, the element is essentially replaced by binary data. * Note that browsers technically use display: inline (as seen in the developer tools) but they are giving special treatment to images. They still follow all traits of inline-block. ...
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When should I use the new keyword in C++?

... Method 1 (using new) Allocates memory for the object on the free store (This is frequently the same thing as the heap) Requires you to explicitly delete your object later. (If you don't delete it, you could create a memory leak) Memory stays al...
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When to favor ng-if vs. ng-show/ng-hide?

...ise the difference: ng-if will remove elements from DOM. This means that all your handlers or anything else attached to those elements will be lost. For example, if you bound a click handler to one of child elements, when ng-if evaluates to false, that element will be removed from DOM and your cli...
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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?

... a matrix of size 2^n is slower than transposing one of size 2^n+1 . For small values of n , the difference is not major. ...
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Visual Studio 2012 Express is suddenly “incompatible with this version of Windows”?

...e same message on Visual Studio 2012 Premium (on PC where Windows 7 re-installed in last month) - the suggested fix was "Update for Microsoft Visual Studio 2012 (KB2781514)" which seems to have fixed it www.microsoft.com/en-us/download/details.aspx?id=36020 ...
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Android Studio: Android Manifest doesn't exists or has incorrect root tag

... Thanks. Hope all the answers keep helping people. – axierjhtjz Sep 26 '14 at 16:04 4 ...
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twitter bootstrap autocomplete dropdown / combobox with Knockoutjs

... How did you use Select2 to allow text input that was not already included in the datasource? – compcentral Apr 30 '13 at 14:42 4 ...
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How to sort a dataframe by multiple column(s)

...as speedy as the base R commands with their convoluted machinations. Typically brilliant Hadley Wickham work. My only gripe with it is that it breaks the standard R nomenclature where sorting objects get called by sort(object), but I understand why Hadley did it that way due to issues discussed in...
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When to call activity context OR application context?

...n Activity instances via onRetainNonConfigurationInstance(). Android internally tracks bindings via these ServiceConnections and holds references to the Contexts that create the bindings. If you bind from the Activity, then the new Activity instance will have a reference to the ServiceConnection whi...