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Fatal error: use of unimplemented initializer 'init(coder:)' for class

... is required because instantiating a UIViewController from a UIStoryboard calls it. To see how we initialize a UIViewController from a UIStoryboard, please take a look here Why is this not a problem with Objective-C? Because Objective-C automatically inherits all the required UIViewController initia...
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How do I find out which DOM element has the focus?

... Use document.activeElement, it is supported in all major browsers. Previously, if you were trying to find out what form field has focus, you could not. To emulate detection within older browsers, add a "focus" event handler to all fields and record the last-focused field...
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Convert a list to a data frame

...hich in turn yields FALSE as its default. Assuming your list of lists is called l: df <- data.frame(matrix(unlist(l), nrow=length(l), byrow=T)) The above will convert all character columns to factors, to avoid this you can add a parameter to the data.frame() call: df <- data.frame(matrix(unl...
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How to delete a record in Django models?

... Note that the first one will not call the .delete() method of the object, so if you have 'cleanup' code in that method it will not be called. Generally not an issue, but worth keeping in mind. – Matthew Schinckel Sep 28 ...
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Load “Vanilla” Javascript Libraries into Node.js

... have some functionality I would like to use in a Node.js server. (Specifically I want to use a QuadTree javascript library that I found.) But these libraries are just straightforward .js files and not "Node.js libraries". ...
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Remove Fragment Page from ViewPager in Android

I'm trying to dynamically add and remove Fragments from a ViewPager, adding works without any problems, but removing doesn't work as expected. ...
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Role-based access control (RBAC) vs. Claims-based access control (CBAC) in ASP.NET MVC

...ifferent role for those people who are in Marketing. So, you are forced to allow all marketing people to create Customers. you spotted another problem, anytime you decide that Marketing people should be allowed to create customers, you have to update all of your MVC Action methods Authorize attrib...
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Border around specific rows in a table?

...at can put a border around specific rows in a table. Yes, I know I'm not really supposed to use tables for layout but I don't know enough CSS to completely replace it yet. ...
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How do I clear stuck/stale Resque workers?

...me, I would still see this in redis-web: 0 out of 10 Workers Working Finally, this worked for me to clear all the workers: Resque.workers.each {|w| w.unregister_worker} share | improve this an...
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What's the fastest way to read a text file line-by-line?

...ile line by line you will have to do some benchmarking. I have done some small tests on my computer but you cannot expect that my results apply to your environment. Using StreamReader.ReadLine This is basically your method. For some reason you set the buffer size to the smallest possible value (12...