大约有 47,000 项符合查询结果(耗时:0.0493秒) [XML]

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scala vs java, performance and memory? [closed]

....length()>2 && mapping.get(s) != null) b.add(mapping.get(s)); Now not only did I save the time it took me to type full variable names and curly braces (freeing me to spend 5 more seconds to think deep algorithmic thoughts), but I can also enter my code in obfuscation contests and potent...
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Numpy - add row to array

... @Georgy To be honest, I don't know. I was here looking for answers same as you :-). I can't remember now why I wrote above comment. I must have seen in the docs its deprecated. But looking at the docs now... it doesn't say so. Is it possible they deprecate...
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Appending a vector to a vector [duplicate]

...o use reserve if you are repeatedly inserting into a vector for which you know the final size, and that size is large. Otherwise, I'd let the STL grow your vector as needed. – moodboom Sep 10 '13 at 16:24 ...
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How to stop app that node.js express 'npm start'

...(80, () => { console.log('HTTP server listening on port 80'); }); // Now for the socket.io stuff - NOTE THIS IS A RESTFUL HTTP SERVER // We are only using socket.io here to respond to the npmStop signal // To support IPC (Inter Process Communication) AKA RPC (Remote P.C.) const io = require('...
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pandas dataframe columns scaling with sklearn

... I am not sure if previous versions of pandas prevented this but now the following snippet works perfectly for me and produces exactly what you want without having to use apply >>> import pandas as pd >>> from sklearn.preprocessing import MinMaxScaler >>> scal...
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Growing Amazon EBS Volume sizes [closed]

I'm quite impressed with Amazon's EC2 and EBS services. I wanted to know if it is possible to grow an EBS Volume. 11 Answer...
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Advantages of using prototype, vs defining methods straight in the constructor? [duplicate]

...rer :) I didn't realize the efficiency difference - that's very useful to know. Same for the hoisting effect - tricky, indeed. Thanks for such a great answer, I learned a lot from it! – Leo Dec 22 '10 at 11:09 ...
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PHP: Storing 'objects' inside the $_SESSION

... it quite cool because when I jump to another page I still have my object. Now before I start using this approach I would like to find out if it is really such a good idea or if there are potential pitfalls involved. ...
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How can I convert JSON to a HashMap using Gson?

... I know this is a fairly old question, but I was searching for a solution to generically deserialize nested JSON to a Map<String, Object>, and found nothing. The way my yaml deserializer works, it defaults JSON objects to ...
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How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?

... Now MD5 & sha1 process changed Google After we got MD5 here.we need to get API key from Google API console right. thanks guys – Crishnan Iyengar Jul 12 '13 at 7:16 ...