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postgresql: INSERT INTO … (SELECT * …)
I'm not sure if its standard SQL:
6 Answers
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Search for “does-not-contain” on a DataFrame in pandas
I've done some searching and can't figure out how to filter a dataframe by df["col"].str.contains(word) , however I'm wondering if there is a way to do the reverse: filter a dataframe by that set's compliment. eg: to the effect of !(df["col"].str.contains(word)) .
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Using awk to remove the Byte-order mark
... So: awk '{if(NR==1)sub(/^\xef\xbb\xbf/,"");print}' INFILE > OUTFILE and make sure INFILE and OUTFILE are different!
– Steve Clay
Feb 12 '10 at 20:30
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Merging two images in C#/.NET
... answered Jan 21 '09 at 12:59
Andreas NiedermairAndreas Niedermair
18.6k88 gold badges7171 silver badges115115 bronze badges
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Can existing virtualenv be upgraded gracefully?
I have a virtualenv created for Python 2.5 and want to "upgrade" it to Python 2.6.
5 Answers
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Return 0 if field is null in MySQL
... @MarkByers can you show why Kevin's example in the comment is wrong and what it should actually be?
– Michael
Aug 10 '16 at 13:44
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Generate a random double in a range
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To generate a random value between rangeMin and rangeMax:
Random r = new Random();
double randomValue = rangeMin + (rangeMax - rangeMin) * r.nextDouble();
share
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Closing Hg Branches
When using hg branch FeatureBranchName and publishing it to a central repo that is shared amongst developers, is there a way to eventually close the FeatureBranchName when its development has officially been merged with the default branch?
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How to verify that method was NOT called in Moq?
...isn't really a "verify not called" as it could be caught within the method and would still work - providing a false positive!
– Dan
Aug 20 '10 at 9:59
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用户反馈ble广播数据收不到 - 用户反馈 - 清泛IT社区，为创新赋能！
...？要是可以的话我就先买个离线版的，在线的太慢了
清泛:
ble 广播用法不常见，也不太安全，目前就之前一个用户反馈要这个功能，应该是成功过的。这块我还没有实地测试，后续我会用硬件测试一下的
MCU&物联网:
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