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How to compare two dates?
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edited Oct 8 '18 at 10:28
Thomas Decaux
17.3k22 gold badges7878 silver badges8282 bronze badges
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Mod of negative number is melting my brain
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287
I always use my own mod function, defined as
int mod(int x, int m) {
return (x%m + m)%m;
}...
How to determine the longest increasing subsequence using dynamic programming?
... N)
Now let's do a real example:
Collection of integers:
2 6 3 4 1 2 9 5 8
Steps:
0. S = {} - Initialize S to the empty set
1. S = {2} - New largest LIS
2. S = {2, 6} - New largest LIS
3. S = {2, 3} - Changed 6 to 3
4. S = {2, 3, 4} - New largest LIS
5. S = {1, 3, 4} - Changed 2 to 1
6. S = {1, ...
通过API获取IP信息、IP归属地 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。一、淘宝API接口：http://ip.taobao.com/service/getIpInfo.php?ip=8.8.8.8
{"code":0,"data":{"country":"\u7f8e\u56fd","country_id":"US","area":"","area_id":"","region":"","region_id":"","city":"","city_id":"","county":"","county_id":"","isp":"","isp_id":"","ip":"8.8.8.8"}}
注意：返回...
How to append multiple values to a list in Python
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384
You can use the sequence method list.extend to extend the list by multiple values from any kind...
Insert a row to pandas dataframe
...index
And you get, as desired:
A B C
0 2 3 4
1 5 6 7
2 7 8 9
See in Pandas documentation Indexing: Setting with enlargement.
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Javascript - sort array based on another array
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78
Something like:
items = [
['Anne', 'a'],
['Bob', 'b'],
['Henry', 'b'],
['Andre...
What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__?
...it is specified as containing "an implementation-defined string" (C++11 §8.4.1[dcl.fct.def.general]/8), which is not quite as useful as the specification in C. (The original proposal to add __func__ to C++ was N1642).
__FUNCTION__ is a pre-standard extension that some C compilers support (includin...
How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly
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0 0 1 2
1 0 NaN 0
2 0 0 NaN
3 0 1 2
4 0 1 2
In [58]: pd.isnull(df)
Out[58]:
0 1 2
0 False False False
1 False True False
2 False False True
3 False False False
4 False False False
In [59]: pd.isnull(df).any(axis=1)
Out[59]:
0 False
1 ...
Tool to read and display Java .class versions
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edited Mar 8 '12 at 15:22
Community♦
111 silver badge
answered Aug 26 '08 at 7:16
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