大约有 5,476 项符合查询结果（耗时：0.0204秒） [XML]
Python - How to sort a list of lists by the fourth element in each list? [duplicate]
... itemgetter will not work if the list contains : [['a','b','c','100','d'],['e','f','g','2','h'],['i','j','k','4','m']]
– Ashwini Chaudhary
Jul 9 '13 at 18:24
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How do I find the duplicates in a list and create another list with them?
... seen_add(item)
return list(seen2)
l = [1,2,3,2,1,5,6,5,5,5]*100
Here are the results: (well done @JohnLaRooy!)
$ python -mtimeit -s 'import test' 'test.JohnLaRooy(test.l)'
10000 loops, best of 3: 74.6 usec per loop
$ python -mtimeit -s 'import test' 'test.moooeeeep(test.l)'
10000 l...
Maintain the aspect ratio of a div with CSS
... resize: horizontal;
border: 1px dashed;
overflow: auto;
max-width: 100%;
height: calc(100vh - 16px);
}
div {
width: 100%;
padding-bottom: 75%;
background: gold; /** <-- For the demo **/
}
<div class="demoWrapper">
<div></div>
</div>
It will result...
What is the real overhead of try/catch in C#?
...
100
Three points to make here:
Firstly, there is little or NO performance penalty in actually ha...
Python loop counter in a for loop [duplicate]
...or i in xrange(len(s)))". Each of them averaged on 8.83 usec per loop over 100,000 loops. Other tests (too long for a comment) showed very slight (~2%) speed increases for xrange(len(s)) if it only needed to access the element on every 16 iterations.
– ArtOfWarfare
...
C# 能否获取一个对象所占内存的大小？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的文本信息如下所示，通过文本信息，可以得知多出来的100多个字节，估计是就是这一串字符串吧。
JConsoleApplication3, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null ConsoleApplication3.Student
延伸阅读： http://bl...
How do I remove a big file wrongly committed in git [duplicate]
I did a stupid thing. Imagine that I committed a 100MB file. Then I see this and delete this file and commit again. This is a normal procedure to delete a file.
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How to implement classic sorting algorithms in modern C++?
... need around 130 LOC, C++98 and Boost 190 (+50%) and C++98 more than 270 (+100%).
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Get Bitmap attached to ImageView
...teArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
return stream.toByteArray();
}
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Extracting text OpenCV
...int i = 0; i < contours.size(); i++ )
if (contours[i].size()>100)
{
cv::approxPolyDP( cv::Mat(contours[i]), contours_poly[i], 3, true );
cv::Rect appRect( boundingRect( cv::Mat(contours_poly[i]) ));
if (appRect.width>appRect.height)
...