大约有 46,000 项符合查询结果(耗时:0.0561秒) [XML]

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How to create a sequence of integers in C#?

F# has sequences that allows to create sequences: 8 Answers 8 ...
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iOS UIImagePickerController result image orientation after upload

I am testing my iPhone application on an iOS 3.1.3 iPhone. I am selecting/capturing an image using a UIImagePickerController : ...
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Fastest way to reset every value of std::vector to 0

What's the fastest way to reset every value of a std::vector<int> to 0 and keeping the vectors initial size ? 6 An...
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Razor HtmlHelper Extensions (or other namespaces for views) Not Found

Dunno if this was happening in the PR or Beta, but if I create an extension method on HtmlHelper , it is not recognized in a Razor powered page: ...
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Split string with delimiters in C

How do I write a function to split and return an array for a string with delimiters in the C programming language? 20 Answe...
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Can dplyr package be used for conditional mutating?

Can the mutate be used when the mutation is conditional (depending on the values of certain column values)? 5 Answers ...
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A simple explanation of Naive Bayes Classification

I am finding it hard to understand the process of Naive Bayes, and I was wondering if someone could explain it with a simple step by step process in English. I understand it takes comparisons by times occurred as a probability, but I have no idea how the training data is related to the actual datase...
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What does `kill -0 $pid` in a shell script do?

Basically, what signal does '0' represent, because here I see SIGNAL numbers starting from 1. 6 Answers ...
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Why is === faster than == in PHP?

Why is === faster than == in PHP? 11 Answers 11 ...
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How to calculate the number of occurrence of a given character in each row of a column of strings?

I have a data.frame in which certain variables contain a text string. I wish to count the number of occurrences of a given character in each individual string. ...