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What is the difference between YAML and JSON?

...t it is easy for a human to read. YAML has the ability to reference other items within a YAML file using "anchors." Thus it can handle relational information as one might find in a MySQL database. YAML is more robust about embedding other serialization formats such as JSON or XML within a YAML fil...
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Do login forms need tokens against CSRF attacks?

...ficant threat if the user accidentally does anything related to purchasing items. For example, an attacker tricks the user into logging in to a website, and the user proceeds to purchase items without realizing they are in another account (think Amazon or similar). Now the attacker has access to sav...
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What's the difference between window.location= and window.location.replace()?

... window.location adds an item to your history in that you can (or should be able to) click "Back" and go back to the current page. window.location.replace replaces the current history item so you can't go back to it. See window.location: assign...
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Representing graphs (data structure) in Python

... """ Remove all references to node """ for n, cxns in self._graph.items(): # python3: items(); python2: iteritems() try: cxns.remove(node) except KeyError: pass try: del self._graph[node] except KeyError: ...
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MongoDB with redis

... backend application can listen to several queues with a timeout, transfer items to another queue atomically, etc ... If the application requires some queuing, it makes sense to store the queue in Redis, and keep the persistent functional data in MongoDB. Redis also offers a pub/sub mechanism. In a ...
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What are the differences between a multidimensional array and an array of arrays in C#?

...y, and with many types of memory (past and present), accessing consecutive items is faster than accessing distant items. I think in .net one should get optimal results indexing by the last subscript which is what you were doing, but testing the time with the subscripts swapped may be informative in...
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Start thread with member function

...on of a class T and t1 is not one of the types described in the previous item; t1.*f when N == 1 and f is a pointer to member data of a class T and t 1 is an object of type T or a reference to an object of type T or a reference to an object of a type derived from T; (*t1).*f when N ==...
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What is the purpose of backbone.js?

...ethods. Say you have a todo list, you would have a model representing each item on that list. When your model is updated, it fires an event. You might have a view tied to that particular object. The view listens for model change events and re-renders itself. Views Backbone provides you with Vie...
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What is the difference between class and instance attributes?

...ertain number of elements or fewer) and choose to have a default cap of 10 items class MyClass(object): limit = 10 def __init__(self): self.data = [] def item(self, i): return self.data[i] def add(self, e): if len(self.data) >= self.limit: ra...
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Named colors in matplotlib

...lors.to_rgba(color)[:3])), name) for name, color in colors.items()) sorted_names = [name for hsv, name in by_hsv] n = len(sorted_names) ncols = 4 nrows = n // ncols fig, ax = plt.subplots(figsize=(12, 10)) # Get height and width X, Y = fig.get_dpi() * fig.get_size_inches() h = Y /...