大约有 43,410 项符合查询结果（耗时：0.0238秒） [XML]
All but last element of Ruby array
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Perhaps...
a = t # => [1, 2, 3, 4]
a.first a.size - 1 # => [1, 2, 3]
or
a.take 3
or
a.first 3
or
a.pop
which will return the last and leave the array with everything before it
or make the computer work for its dinner:
a.reverse.drop(1...
Get Android API level of phone currently running my application [duplicate]
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412
Check android.os.Build.VERSION, which is a static class that holds various pieces of information...
Redirect Windows cmd stdout and stderr to a single file
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You want:
dir > a.txt 2>&1
The syntax 2>&1 will redirect 2 (stderr) to 1 (stdout). You can also hide messages by redirecting to NUL, more explanation and examples on MSDN.
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Transpose list of lists
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How about
map(list, zip(*l))
--> [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
For python 3.x users can use
list(map(list, zip(*l)))
Explanation:
There are two things we need to know to understand what's going on:
The signature of zip: zip(*iterables) This means zip expects ...
JavaScript math, round to two decimal places [duplicate]
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824
NOTE - See Edit 4 if 3 digit precision is important
var discount = (price / listprice).toFixed(...
What does the tilde (~) mean in my composer.json file?
...de means next significant release. In your case, it is equivalent to >= 2.0, < 3.0.
The full explanation is at Tilde Version Range docs page:
The ~ operator is best explained by example: ~1.2 is equivalent to >=1.2 <2.0.0, while ~1.2.3 is equivalent to >=1.2.3 <1.3.0.
Ano...
Rotating a two-dimensional array in Python
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Consider the following two-dimensional list:
original = [[1, 2],
[3, 4]]
Lets break it down step by step:
>>> original[::-1] # elements of original are reversed
[[3, 4], [1, 2]]
This list is passed into zip() using argument unpacking, so the zip call ends up...
Split list into smaller lists (split in half)
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238
A = [1,2,3,4,5,6]
B = A[:len(A)//2]
C = A[len(A)//2:]
If you want a function:
def split_lis...
Visual SVN 安装及客户端使用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...作；另外，用户权限的管理也是通过图像界面来配置。
2.为什么不用TFS?
回答:
因为我们一开始就是用Subversion和TortioseSVN,所以就没有更换其他的软件。至于TFS至今没有用过，其实，我只是看了一些的文章而已，对它也不了解。
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Installing Numpy on 64bit Windows 7 with Python 2.7.3 [closed]
...nstaller for Numpy is for Numpy version 1.3.0 which only works with Python 2.6
6 Answers
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