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How do I add a class to a given element?

... If you're only targeting modern browsers: Use element.classList.add to add a class: element.classList.add("my-class"); And element.classList.remove to remove a class: element.classList.remove("my-class"); If you need to support Internet Explorer 9 or lower: Add a space plus the name of...
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What is the best way to compare floats for almost-equality in Python?

It's well known that comparing floats for equality is a little fiddly due to rounding and precision issues. 15 Answers ...
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What is Common Gateway Interface (CGI)?

... everything. It is so trivial and naive from the name. I feel that I understood this and I felt this every time I encountered this word. But frankly, I didn't. I'm still confused. ...
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How do I create a custom iOS view class and instantiate multiple copies of it (in IB)?

... Well to answer conceptually, your timer should likely be a subclass of UIView instead of NSObject. To instantiate an instance of your timer in IB simply drag out a UIView drop it on your view controller's view, and set it's class...
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Optimise PostgreSQL for fast testing

I am switching to PostgreSQL from SQLite for a typical Rails application. 2 Answers 2 ...
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Does PHP have threading?

...There is nothing available that I'm aware of. The next best thing would be to simply have one script execute another via CLI, but that's a bit rudimentary. Depending on what you are trying to do and how complex it is, this may or may not be an option. ...
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CA2202, how to solve this case

Can anybody tell me how to remove all CA2202 warnings from the following code? 12 Answers ...
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Protected in Interfaces

... Because an interface is supposed to mean "what you can see from outside the class". It would not make sense to add non-public methods. share | improve this ...
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How to change port number for apache in WAMP

I am new to WAMP server and installed it on my system but after installing it when I check it by going to localhost url like this http://localhost/ in the browser it is not working. I am getting a 404 error and blank page . ...
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AngularJS $http and $resource

I have some web services that I want to call. $resource or $http , which one should I use? 10 Answers ...