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Very large matrices using Python and NumPy

NumPy is an extremely useful library, and from using it I've found that it's capable of handling matrices which are quite large (10000 x 10000) easily, but begins to struggle with anything much larger (trying to create a matrix of 50000 x 50000 fails). Obviously, this is because of the massive memo...
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What is Lazy Loading?

...his application is probably doing a lot of eager loading... loading things from disk, and doing calculations and whatnot long before it is ever needed. Compare this to lazy loading, the application would start much faster, but then the first time you need to do something that requires some long run...
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Call Activity method from adapter

Is it possible to call method that is defined in Activity from ListAdapter ? 8 Answers ...
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List all environment variables from the command line

Is it possible to list all environment variables from a Windows' command prompt? 8 Answers ...
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Does C# have extension properties?

...use even if there is already an implementation, they want to make it right from the start. But it will ... There is an extension members item in the C# 7 work list so it may be supported in the near future. The current status of extension property can be found on Github under the related item. Ho...
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How to keep keys/values in same order as declared?

... From Python 3.6 onwards, the standard dict type maintains insertion order by default. Defining d = {'ac':33, 'gw':20, 'ap':102, 'za':321, 'bs':10} will result in a dictionary with the keys in the order listed in the source c...
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Is async HttpClient from .Net 4.5 a bad choice for intensive load applications?

...a 1 millisecond to complete. In real world this will always be subjective. From my point of view, something equivalent to a small query on a local network database, can be considered fast, while something equivalent to an API call over the internet, can be considered slow or potentially slow. ...
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How do I remove all non alphanumeric characters from a string except dash?

How do I remove all non alphanumeric characters from a string except dash and space characters? 13 Answers ...
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Gradients on UIView and UILabels On iPhone [duplicate]

...te desired look is no good as the text may vary depending on data returned from a server. 7 Answers ...
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How can I write to the console in PHP?

...ension called FirePHP which enables the logging and dumping of information from your PHP applications to the console. This is an addon to the awesome web development extension Firebug. http://www.studytrails.com/blog/using-firephp-in-firefox-to-debug-php/ Chrome However if you are using Chrome ...