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Embed image in a element

...<button> element in HTML. The button is the same size as the image, and the image is shown but for some reason not in the center - so it's impossible to see it all. In other words it seems like the top right corner of the image is located at the center of the button and not at the top right c...
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What is the difference between “Rollback…” and “Back Out Submitted Changelist #####” in Perforce P4V

... Both of these operations restore a set of files to a previous state and are essentially faster, safer ways of undoing mistakes than using the p4 obliterate command (and you don't need admin access to use them). In the case of "Rollback...", this could be any number of files, even an entire...
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Testing modules in rspec

...ting modules in rspec? I have some modules that get included in few models and for now I simply have duplicate tests for each model (with few differences). Is there a way to DRY it up? ...
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How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved

... users. The problem with Tomcat is that it does not offer JSTL out the box and thus you have to manually install it. This is not necessary in normal Java EE servers. See also What exactly is Java EE? In your specific case, your pom.xml basically tells you that you have jstl-1.2.jar and standard-1.1...
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How do I change bash history completion to complete what's already on the line?

I found a command a couple of months ago that made my bash history auto-complete on what's already on the line when pressing the up arrow: ...
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Eliminate extra separators below UITableView

...usting the height, you can affect how the "bottom bounce" of the table is handled, as you prefer. (Height zero is usually fine). To do it programmatically: Swift override func viewDidLoad() { super.viewDidLoad() self.tableView.tableFooterView = UIView() } Objective-C iOS 6.1+ - (...
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How do I access the $scope variable in browser's console using AngularJS?

... Pick an element in the HTML panel of the developer tools and type this in the console: angular.element($0).scope() In WebKit and Firefox, $0 is a reference to the selected DOM node in the elements tab, so by doing this you get the selected DOM node scope printed out in the conso...
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Easiest way to check for an index or a key in an array?

... To check if the element is set (applies to both indexed and associative array) [ ${array[key]+abc} ] && echo "exists" Basically what ${array[key]+abc} does is if array[key] is set, return abc if array[key] is not set, return nothing References: See Parameter Expa...
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Numeric for loop in Django templates

... a simple technique that works nicely for small cases with no special tags and no additional context. Sometimes this comes in handy {% for i in '0123456789'|make_list %} {{ forloop.counter }} {% endfor %} share ...
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“elseif” syntax in JavaScript

... people ask questions like this.. I think it shows a fundamental misunderstanding. With if and else there really is no need of elseif. – mpen Oct 23 '10 at 21:12 14 ...