大约有 47,000 项符合查询结果(耗时:0.0618秒) [XML]
Find MongoDB records where array field is not empty
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873
If you also have documents that don't have the key, you can use:
ME.find({ pictures: { $exist...
Running a cron every 30 seconds
... May 26 20:57:30 AWST 2020 Sleeping for 7 seconds (max 24).
Tue May 26 20:58:00 AWST 2020 Sleeping for 2 seconds (max 25).
Tue May 26 20:58:30 AWST 2020 Sleeping for 8 seconds (max 26).
Tue May 26 20:59:00 AWST 2020 Sleeping for 20 seconds (max 27).
Tue May 26 20:59:30 AWST 2020 Sleeping for 25 seco...
Is there a way of setting culture for a whole application? All current threads and new threads?
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edited Aug 26 '14 at 8:25
bluish
22k2222 gold badges107107 silver badges163163 bronze badges
answer...
Notification passes old Intent Extras
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answered Sep 10 '11 at 8:06
IncrediAppIncrediApp
9,89322 gold badges2929 silver badges2424 bronze badges
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Why charset names are not constants?
... top of that you have to remember exact names of your charsets. Is it "utf8" ? Or "utf-8" ? Or maybe "UTF-8" ? When searching internet for code samples you will see all of the above. Why not just make them named constants and use Charset.UTF8 ?
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UIButton: Making the hit area larger than the default hit area
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edited May 25 '18 at 7:33
answered Oct 25 '12 at 11:08
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How to manually send HTTP POST requests from Firefox or Chrome browser?
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answered Mar 15 '12 at 8:32
AbhinavAbhinav
30.9k99 gold badges3838 silver badges4848 bronze badges
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Better way to shuffle two numpy arrays in unison
...,
[ 3., 4., 5.]],
[[ 6., 7., 8.],
[ 9., 10., 11.]],
[[ 12., 13., 14.],
[ 15., 16., 17.]]])
b = numpy.array([[ 0., 1.],
[ 2., 3.],
[ 4., 5.]])
We can now ...
Selecting a row of pandas series/dataframe by integer index
...0,2),columns=list('AB'))
In [2]: df
Out[2]:
A B
0 1.068932 -0.794307
2 -0.470056 1.192211
4 -0.284561 0.756029
6 1.037563 -0.267820
8 -0.538478 -0.800654
In [5]: df.iloc[[2]]
Out[5]:
A B
4 -0.284561 0.756029
In [6]: df.loc[[2]]
Out[6]:
A ...
How to convert Java String into byte[]?
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8 Answers
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