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NSInvocation for Dummies?

How exactly does NSInvocation work? Is there a good introduction? 4 Answers 4 ...
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Xcode: What is a target and scheme in plain language?

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How do I check if a string is valid JSON in Python?

In Python, is there a way to check if a string is valid JSON before trying to parse it? 4 Answers ...
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Python: How would you save a simple settings/config file?

I don't care if it's JSON , pickle , YAML , or whatever. 6 Answers 6 ...
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Can I Replace Apache with Node.js?

I have a website running on CentOS using the usual suspects (Apache, MySQL, and PHP). Since the time this website was originally launched, it has evolved quite a bit and now I'd like to do fancier things with it—namely real-time notifications. From what I've read, Apache handles this poorly. I'm w...
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Python unittests in Jenkins?

How do you get Jenkins to execute python unittest cases? Is it possible to JUnit style XML output from the builtin unittest package? ...
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Casperjs/PhantomJs vs Selenium

We are using Selenium to automate our UI testing. Recently we have seen majority of our users using Chrome. So we wanted to know - pros and cons of using PhantomJS vs Selenium: ...
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How can I get Knockout JS to data-bind on keypress instead of lost-focus?

This example of knockout js works so when you edit a field and press TAB, the viewmodel data and hence the text below the fields is updated. ...
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What's the difference between text/xml vs application/xml for webservice response

This is more of a general question about the difference between text/xml and application/xml . I am fairly new to writing webservices (REST - Jersey). I have been producing application/xml since it is what shows up in most tutorials / code examples that I have been using to learn, but I recentl...
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Given final block not properly padded

I am trying to implement password based encryption algorithm, but I get this exception: 4 Answers ...