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How do I catch a numpy warning like it's an exception (not just for testing)?

...rr(all='warn'), which will transform the printed warning in a real warning and you'll be able to use the above solution to localize this change in behaviour. Once you actually have a warning, you can use the warnings module to control how the warnings should be treated: >>> import warnin...
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How does BLAS get such extreme performance?

...k The Science of Programming Matrix Computations by Robert A. van de Geijn and Enrique S. Quintana-Ortí. They provide a free download version. BLAS is divided into three levels: Level 1 defines a set of linear algebra functions that operate on vectors only. These functions benefit from vectoriza...
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Detect Chrome extension first run / update

... I used this code for a while and it worked great, until my extension requested a new permission on an update (which suspends the extension until the user accepts the permission). When the permission was accepted and the extension was unsuspended, the onI...
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When to use cla(), clf() or close() for clearing a plot in matplotlib?

... of many axes. Additionally, there are functions from the pyplot interface and there are methods on the Figure class. I will discuss both cases below. pyplot interface pyplot is a module that collects a couple of functions that allow matplotlib to be used in a functional manner. I here assume that...
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What is the difference between declarative and imperative programming? [closed]

I have been searching the web looking for a definition for declarative and imperative programming that would shed some light for me. However, the language used at some of the resources that I have found is daunting - for instance at Wikipedia . Does anyone have a real-world example that they could ...
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Passing variables to the next middleware using next() in Express.js

...ant to pass some variable from the first middleware to another middleware, and I tried doing this, but there was " req.somevariable is a given as 'undefined'". ...
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Get time in milliseconds using C#

...e in milliseconds. By time, I mean a number that is never equal to itself, and is always 1000 numbers bigger than it was a second ago. I've tried converting DateTime.Now to a TimeSpan and getting the TotalMilliseconds from that... but I've heard it isn't perfectly accurate. ...
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Is there a link to GitHub for downloading a file in the latest release of a repository?

...ould redirected to the latest tagged package.zip release asset. Hope it's handy! share | improve this answer | follow | ...
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dynamically add and remove view to viewpager

... After figuring out which ViewPager methods are called by ViewPager and which are for other purposes, I came up with a solution. I present it here since I see a lot of people have struggled with this and I didn't see any other relevant answers. First, here's my adapter; hopefully comments ...
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When to use EntityManager.find() vs EntityManager.getReference() with JPA

...nager.getReference(LObj.getClass(), LObj.getId()) to get a database entity and then pass the returned object to be persisted in another table. ...