大约有 40,000 项符合查询结果(耗时:0.0452秒) [XML]

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Which is faster in Python: x**.5 or math.sqrt(x)?

I've been wondering this for some time. As the title say, which is faster, the actual function or simply raising to the half power? ...
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What is the easiest way to initialize a std::vector with hardcoded elements?

I can create an array and initialize it like this: 29 Answers 29 ...
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How to return an array from JNI to Java?

...ere. } // move from the temp structure to the java structure (*env)->SetIntArrayRegion(env, result, 0, size, fill); return result; } share | improve this answer | fol...
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How to solve PHP error 'Notice: Array to string conversion in…'

I have a PHP file that tries to echo a $_POST and I get an error, here is the code: 5 Answers ...
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Javascript fuzzy search that makes sense

I'm looking for a fuzzy search JavaScript library to filter an array. I've tried using fuzzyset.js and fuse.js , but the results are terrible (there are demos you can try on the linked pages). ...
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Editing legend (text) labels in ggplot

...ties using the aesthetic mapping. Here's an example using the mtcars data set and labs(): ggplot(mtcars, aes(x=mpg, y=disp, size=hp, col=as.factor(cyl), shape=as.factor(gear))) + geom_point() + labs(x="miles per gallon", y="displacement", size="horsepower", col="# of cylinders", shape=...
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is there an virtual environment for node.js?

I've searched the wiki modules page, but I can't find anything similar to virtualenv (python) or rvm. 7 Answers ...
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Align image in center and middle within div

I have following div 33 Answers 33 ...
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Overriding a JavaScript function while referencing the original

...d }). Just doing }(); would produce the same result, as (function{})() 1st set of parentheses are used because you cant just declare, anonymous ,function expression you have to assign it. But by doing () you are not defining anything just returning a function. – Muhammad Umer ...
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The simplest possible JavaScript countdown timer? [closed]

... I have two demos, one with jQuery and one without. Neither use date functions and are about as simple as it gets. Demo with vanilla JavaScript function startTimer(duration, display) { var timer = duration, minutes, seconds; setInterval(function () { minutes = parseInt...