大约有 21,000 项符合查询结果(耗时:0.0381秒) [XML]

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What are Scala context and view bounds?

... I thought this was asked already, but, if so, the question isn't apparent in the "related" bar. So, here it is: What is a View Bound? A view bound was a mechanism introduced in Scala to enable the use of some type A as if it were some type B. The typic...
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Good example of livelock?

I understand what livelock is, but I was wondering if anyone had a good code-based example of it? And by code-based, I do not mean "two people trying to get past each other in a corridor". If I read that again, I'll lose my lunch. ...
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How can the Euclidean distance be calculated with NumPy?

... Nicolas Gervais 13.3k77 gold badges3434 silver badges5656 bronze badges answered Sep 9 '09 at 20:12 u0b34a0f6aeu0b34a0f6ae ...
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Is it possible to specify your own distance function using scikit-learn K-Means Clustering?

...spatial.distance, or a user function. Comments would be welcome (this has had only one user so far, not enough); in particular, what are your N, dim, k, metric ? #!/usr/bin/env python # kmeans.py using any of the 20-odd metrics in scipy.spatial.distance # kmeanssample 2 pass, first sample sqrt(N) ...
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Fixed point vs Floating point number

...t can't understand fixed point and floating point numbers due to hard to read definitions about them all over Google. But none that I have read provide a simple enough explanation of what they really are. Can I get a plain definition with example? ...
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How to write a cron that will run a script every day at midnight?

... sfletche 32.8k2323 gold badges8080 silver badges105105 bronze badges answered Oct 21 '10 at 3:47 Jordan RunningJordan Running ...
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What happens if you static_cast invalid value to enum class?

...rom the underlying type to the enumeration type, no value in data[0] can lead to UB for the static_cast. After CWG 1766 (C++17) See CWG defect 1766. The [expr.static.cast]p10 paragraph has been strengthened, so you now can invoke UB if you cast a value that is outside the representable range of an ...
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When is a language considered a scripting language? [closed]

...ipting language? I've heard some people say "when it gets interpreted instead of compiled". That would make PHP (for example) a scripting language. Is that the only criterion? Or are there other criteria? ...
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Manually raising (throwing) an exception in Python

... Be specific in your message, e.g.: raise ValueError('A very specific bad thing happened.') Don't raise generic exceptions Avoid raising a generic Exception. To catch it, you'll have to catch all other more specific exceptions that subclass it. Problem 1: Hiding bugs raise Exception('I know...
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How to specify maven's distributionManagement organisation wide?

...0</version> </parent> This solution will allow you to easily add other common things to all your company's projects. For instance if you wanted to standardize your JUnit usage to a specific version, this would be the perfect place for that. If you have projects that use multi-module s...