大约有 5,500 项符合查询结果（耗时：0.0257秒） [XML]
What is the difference between range and xrange functions in Python 2.X?
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In Python 2.x:
range creates a list, so if you do range(1, 10000000) it creates a list in memory with 9999999 elements.
xrange is a sequence object that evaluates lazily.
In Python 3, range does the equivalent of python's xrange, and to get the list, you have to use list(range(....
Pandas groupby: How to get a union of strings
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JeffJeff
100k1717 gold badges187187 silver badges162162 bronze badges
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Avoid dropdown menu close on click inside
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+100
Removing the data attribute data-toggle="dropdown" and implementing the open/close of the dropdown can be a solution.
First by hand...
Why is === faster than == in PHP?
...speed of:
$a == $b vs $a === $b
where $a and $b were random integers [1, 100]
the two variables were generated and compared one million times
the tests were run 10 times
And here are the results:
$a == $b $a === $b
--------- ---------
0.765770 0.762020
0.753041 0.825965
0.770631 0.783696...
IEnumerable and Recursion using yield return
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100
You need to yield each of the items yielded by the recursive call:
public static IEnumerable&...
How to populate/instantiate a C# array with a single value?
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Change void to T[] and then you can do var a = new int[100].Polupate(1)
– orad
Jul 14 '17 at 16:50
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show 8 more comment...
git visual diff between branches
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100
To see a visual diff of all differences between two branches I like to merge the two branches ...
How to change value of object which is inside an array using JavaScript or jQuery?
...sing extra libraries.(using ES6)
const state = [
{
userId: 1,
id: 100,
title: "delectus aut autem",
completed: false
},
{
userId: 1,
id: 101,
title: "quis ut nam facilis et officia qui",
completed: false
},
{
userId: 1,
id: 102,
title: "fugiat veniam minu...
Best way to list files in Java, sorted by Date Modified?
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100
I think your solution is the only sensible way. The only way to get the list of files is to u...
Is String.Contains() faster than String.IndexOf()?
...Andrew Harry
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