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Numpy `logical_or` for more than two arguments

...arrays? (The same question could be asked with regard to Numpy's logical_and and obtaining the intersection of more than two arrays.) ...
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How do cache lines work?

I understand that the processor brings data into the cache via cache lines, which - for instance, on my Atom processor - brings in about 64 bytes at a time, whatever the size of the actual data being read. ...
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What are the effects of exceptions on performance in Java?

Question: Is exception handling in Java actually slow? 18 Answers 18 ...
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How to update Python?

... 2012. I can't find any consensus on whether I should completely uninstall and wipe this version before putting on the latest version. ...
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Which machine learning classifier to choose, in general? [closed]

Suppose I'm working on some classification problem. (Fraud detection and comment spam are two problems I'm working on right now, but I'm curious about any classification task in general.) ...
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DynamoDB vs MongoDB NoSQL [closed]

...ject, we plan to store from about 500k records per month in the first year and maybe more for the next years this is a vertical application so there's no need to use a database for this, that's the reason why I decided to choose a noSQL data storage. ...
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What are MVP and MVC and what is the difference?

When looking beyond the RAD (drag-drop and configure) way of building user interfaces that many tools encourage you are likely to come across three design patterns called Model-View-Controller , Model-View-Presenter and Model-View-ViewModel . My question has three parts to it: ...
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What is Mocking?

...-memory structure for storing records. The object under test can then read and write records to the database stub to allow it to execute the test. This could test some behavior of the object not related to the database and the database stub would be included just to let the test run. If you instead ...
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What are the differences between type() and isinstance()?

...of a base class, too), while checking for equality of type does not (it demands identity of types and rejects instances of subtypes, AKA subclasses). Normally, in Python, you want your code to support inheritance, of course (since inheritance is so handy, it would be bad to stop code using yours fr...
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What XML parser should I use in C++? [closed]

I have XML documents that I need to parse and/or I need to build XML documents and write them to text (either files or memory). Since the C++ standard library does not have a library for this, what should I use? ...