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Find the day of a week
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305
df = data.frame(date=c("2012-02-01", "2012-02-01", "2012-02-02"))
df$day <- weekdays(as.Da...
Python 3 ImportError: No module named 'ConfigParser'
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373
In Python 3, ConfigParser has been renamed to configparser for PEP 8 compliance. It looks like...
In PyCharm, how to go back to last location?
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Under ArchLinux with PyCharm CE 3.1 works the combination Ctrl + Alt + Left.
This is the way I find out the combination:
(Right click) Go To -> Implementation(s)
Double Shift -> Back
There is an option Back in the section Actions
Ctrl + Shift + A
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LINQ Aggregate algorithm explained
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1030
The easiest-to-understand definition of Aggregate is that it performs an operation on each elem...
Determine .NET Framework version for dll
... been upgraded to Visual Studio 2008 and changed to .NET framework version 3.5.
14 Answers
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Mapping a function on the values of a map in Clojure
...earn them!
– Runevault
Nov 5 '09 at 3:14
I agree. I didn't know the into function, but it makes perfect sense using it...
SQL Server : Columns to Rows
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indicatorvalue
for indicatorname in (Indicator1, Indicator2, Indicator3)
) unpiv;
Note, the datatypes of the columns you are unpivoting must be the same so you might have to convert the datatypes prior to applying the unpivot.
You could also use CROSS APPLY with UNION ALL to convert the col...
Java: How to convert List to Map
...t.size());
– Víctor Romero
Jun 5 '13 at 12:18
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show 5 mo...
How to get thread id from a thread pool?
...t which one of those 5 threads executes my task (something like "thread #3 of 5 is doing this task")?
6 Answers
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