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OAuth: how to test with local URLs?

I am trying to test OAuth buttons, but they all (Facebook, Twitter, LinkedIn) come back with errors that seem to signal that I can not test or use them from a local URL. ...
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A simple explanation of Naive Bayes Classification

... & part two being the confusion surrounding Training set. In general all of Machine Learning Algorithms need to be trained for supervised learning tasks like classification, prediction etc. or for unsupervised learning tasks like clustering. During the training step, the algorithms are taught...
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Fatal error: unexpectedly found nil while unwrapping an Optional values [duplicate]

...r: String!) -> AnyObject! // Used by the delegate to acquire an already allocated cell, in lieu of allocating a new one. That's determined by the exclamation mark after AnyObject: AnyObject! So, first thing to consider is, what is an "Implicitly Unwrapped Optional"? The Swift Programmin...
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How can I ssh directly to a particular directory?

...right on the directory_wanted. Explanation -t Force pseudo-terminal allocation. This can be used to execute arbitrary screen-based programs on a remote machine, which can be very useful, e.g. when implementing menu services. Multiple -t options force tty allocation, even if ssh has no l...
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python: How do I know what type of exception occurred?

I have a function called by the main program: 15 Answers 15 ...
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How to parse JSON in Java

...ystem.out.println(obj.getString("name")); //John Jackson (Maven) ObjectMapper mapper = new ObjectMapper(); Person user = mapper.readValue("{\"name\": \"John\"}", Person.class); System.out.println(user.name); //John shar...
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What are metaclasses in Python?

...ass is an instance of a metaclass. While in Python you can use arbitrary callables for metaclasses (like Jerub shows), the better approach is to make it an actual class itself. type is the usual metaclass in Python. type is itself a class, and it is its own type. You won't be able to recreate somet...
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Usage of __slots__?

What is the purpose of __slots__ in Python — especially with respect to when I would want to use it, and when not? 11 A...
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Start service in Android

I want to call a service when a certain activity starts. So, here's the Service class: 5 Answers ...
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Android LinearLayout : Add border with shadow around a LinearLayout

...in pre-lollipop devices. <android.support.v7.widget.CardView xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" app:cardUseCompatPadding="true" app:cardElevation="4dp" app:cardCornerRadius="3dp" &gt...