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error: request for member '..' in '..' which is of non-class type
...ola Golubyev
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Last segment of URL in jquery
...3743
– Sebastian Barth
May 18 at 14:01
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淘宝大秒系统设计详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...热点问题的解决思路和实践经验。一些数据
大家还记得2013年的小米秒杀吗？三款小米手机各11万台开卖，走的都是大秒系统，3分钟后成为双十一第一家也是最快破亿的旗舰店。经过日志统计，前端系统双11峰值有效请求约60w以...
Assign pandas dataframe column dtypes
...f = pd.DataFrame({'x': {0: 'a', 1: 'b'}, 'y': {0: '1', 1: '2'}, 'z': {0: '2018-05-01', 1: '2018-05-02'}})
df.dtypes
x object
y object
z object
dtype: object
df
x y z
0 a 1 2018-05-01
1 b 2 2018-05-02
You can apply these to each column you want to convert:
df["y"] ...
Function pointers, Closures, and Lambda
... Mark BrackettMark Brackett
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Cross browser JavaScript (not jQuery…) scroll to top animation
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Marcos Lima
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answered Jan 18 '12 at 21:57
TimWollaTimWolla
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Extract month and year from a zoo::yearmon object
...ere is your example date (properly created!)
date1 <- as.yearmon("Mar 2012", "%b %Y")
Then we can extract the date parts as required:
> format(date1, "%b") ## Month, char, abbreviated
[1] "Mar"
> format(date1, "%Y") ## Year with century
[1] "2012"
> format(date1, "%m") ## numeric mon...
How to make an app's background image repeat
...tileMode="repeat"
See this site:
http://androidforbeginners.blogspot.com/2010/06/how-to-tile-background-image-in-android.html
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Tree view of a directory/folder in Windows? [closed]
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edited Aug 23 '17 at 15:01
WonderWorker
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ImportError: No module named matplotlib.pyplot
...n my mac
– bhaskar
May 14 '18 at 12:01
It may happen when you have file name matplotlib.py in your working directory
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