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Select multiple columns in data.table by their numeric indices
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No problem. Compare also dt[,"a"] and dt[,"a", with=FALSE] to see what a helpful option it really is.
– Josh O'Brien
Nov 14 '12 at 17:41
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Does Flask support regular expressions in its URL routing?
I understand that Flask has the int, float and path converters, but the application we're developing has more complex patterns in its URLs.
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How do I draw a grid onto a plot in Python?
I just finished writing code to make a plot using pylab in Python and now I would like to superimpose a grid of 10x10 onto the scatter plot. How do I do that?
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Maven check for updated dependencies in repository
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The Maven Versions plugin and its display-dependency-updates mojo are what you're looking for:
mvn versions:display-dependency-updates
Here is what the output looks like:
[INFO] ----------------------------------------------------------------------...
Git search for string in a single file's history
So if I have a file called foo.rb and it is giving me an error for a missing method called bar , so I want to search the history of foo.rb for the string bar to see if it was ever defined in the past.
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How to use a different version of python during NPM install?
I have terminal access to a VPS running centos 5.9 and default python 2.4.3 installed. I also installed python 2.7.3 via these commands: (I used make altinstall instead of make install )
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Should I use AppDomain.CurrentDomain.BaseDirectory or System.Environment.CurrentDirectory?
...Today I was observing a customer over a remote (terminal services) session and exe2 failed to run 'File not found' error, yet exe1 was in the same directory when we checked. So should I be using AppDomain.CurrentDomain.BaseDirectory or System.Environment.CurrentDirectory ?
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How do I wrap link_to around some html ruby code?
... link_to method. The result I am looking for is that you click the column and get the show page:
5 Answers
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How do you make a WPF slider snap only to discrete integer positions?
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The simple answer is that you take advantage of the IsSnapToTickEnabled and TickFrequency properties. That is, turn snapping to ticks on and set the tick frequency to 1.
Or, in other words ... take advantage of ticks ... but you don't necessarily have to show the ticks that you are snapping to.
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Call static method with reflection
...f the method resides in an ancestor class.
– J. Ouwehand
Jun 8 '19 at 14:51
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