大约有 10,150 项符合查询结果(耗时:0.0375秒) [XML]

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Python: List vs Dict for look up table

I have about 10million values that I need to put in some type of look up table, so I was wondering which would be more efficient a list or dict ? ...
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When NOT to use yield (return) [duplicate]

There are several useful questions here on SO about the benefits of yield return . For example, 11 Answers ...
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C++ Tuple vs Struct

Is there is any difference between using a std::tuple and a data-only struct ? 12 Answers ...
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Delete local Git branches after deleting them on the remote repo

I want to have my local and remote repositories always in sync in terms of branches. 11 Answers ...
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How to get last N records with activerecord?

With :limit in query, I will get first N records. What is the easiest way to get last N records? 14 Answers ...
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What happens when there's insufficient memory to throw an OutOfMemoryError?

I am aware that every object requires heap memory and every primitive/reference on the stack requires stack memory. 11 Answ...
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round() doesn't seem to be rounding properly

The documentation for the round() function states that you pass it a number, and the positions past the decimal to round. Thus it should do this: ...
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What is the difference between supervised learning and unsupervised learning? [closed]

In terms of artificial intelligence and machine learning, what is the difference between supervised and unsupervised learning? Can you provide a basic, easy explanation with an example? ...
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How can I read inputs as numbers?

Why are x and y strings instead of ints in the below code? 10 Answers 10 ...
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How to calculate time elapsed in bash script?

I print the start and end time using date +"%T" , which results in something like: 20 Answers ...