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Delete duplicate records in SQL Server?
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If you don't have a primary key, you can use ORDER BY (SELECT NULL) stackoverflow.com/a/4812038
– Arithmomaniac
Jul 1 '16 at 16:57
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Add params to given URL in Python
... read-only and we need to convert it to a list before we can attempt to modify its data.
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linux tee is not working with python?
... A note: python, like various other commands will use line buffered if stdin and stdout are consoles, but full buffered if the results are redirected to a file or a pipe. tee is seen like a pipe (which it is) and not the hybrid: it write to console. Note: the behaviour could be also controlle...
Change all files and folders permissions of a directory to 644/755
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What if I want only the subfolder to be chmod 755 when specifying the desired_location ? Because this also will make the parent folder 755
– MaXi32
Jun 23 at 0:35
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cancelling queued performSelector:afterDelay calls
does anybody know if it is possible to cancel already queued selector events from the event stack or timer stack (or whatever mechanism it is that is utilized by the API) when you call performSelector:withObject:afterDelay ?
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How to group dataframe rows into list in pandas groupby?
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This takes a lot of time if the dataset is huge, say 10million rows. Is there any faster way to do this? The number of uniques in 'a' is however around 500k
– Abhishek Thakur
Mar 6 '14 at 11:12
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Rails find record with zero has_many records associated [duplicate]
...he's using that to his advantage to check whether a required database identifier is present. If it's not, then there was no record on the photos side of the join. You could also use photos: {id: nil} if that is more clear.
– Javid Jamae
Dec 8 '15 at 18:28
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How can I convert a string to upper- or lower-case with XSLT?
...n XSLT 1.0 the upper-case() and lower-case() functions are not available.
If you're using a 1.0 stylesheet the common method of case conversion is translate():
<xsl:variable name="lowercase" select="'abcdefghijklmnopqrstuvwxyz'" />
<xsl:variable name="uppercase" select="'ABCDEFGHIJKLMNOP...
pull out p-values and r-squared from a linear regression
How do you pull out the p-value (for the significance of the coefficient of the single explanatory variable being non-zero) and R-squared value from a simple linear regression model? For example...
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Properly close mongoose's connection once you're done
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As you can see, these answers are old. If you're using Mongoose 5.0.4, the Connection.close() method is only exported, only available, so use it.
– Константин Ван
Feb 9 '18 at 7:23
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