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What exactly does += do in python?
I need to know what += does in python. It's that simple. I also would appreciate links to definitions of other short hand tools in python.
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How to change language settings in R
...force US-english setting regardless of the system
setting. If you don't know what Terminal is you can use this R command
instead:
system("defaults write org.R-project.R force.LANG en_US.UTF-8")
but do not forget to quit R and start R.app again afterwards. Please
note that you must alw...
In Ruby, is there an Array method that combines 'select' and 'map'?
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Ruby 2.7+
There is now!
Ruby 2.7 is introducing filter_map for this exact purpose. It's idiomatic and performant, and I'd expect it to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.ev...
How to generate serial version UID in Intellij
...'OK'.
(For Macs, Settings is under IntelliJ IDEA -> Preferences...)
Now, if your class implements Serializable, you will see highlight and alt+Enter on class name will propose to generate private static final long serialVersionUID.
UPD: a faster way to find this setting - you might use hotke...
Regular Expression For Duplicate Words
...wrong stuff. Intended to copy the one from my example actually. anyway, it now works! so all good! Thanks!
– Niket Pathak
Dec 7 '18 at 9:45
add a comment
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How to automatically remove trailing whitespace in Visual Studio 2008?
... saved = False
End If
End Sub
I've been using this for some time now without any problems. I didn't create the macro, but modified it from the one in ace_guidelines.vsmacros which can be found with a quick google search.
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Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails
...at references another, but it is failing for some reason. With my limited knowledge of MySQL, the only thing that could possibly be suspect is that there is a foreign key on a different table referencing the one I am trying to reference.
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How can I determine the URL that a local Git repository was originally cloned from?
... After 5 years a lot has changed and this should be the accepted answer now. But maybe add the pre-2.7 syntax as well.
– msp
Dec 14 '15 at 8:17
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Notepad++ Setting for Disabling Auto-open Previous Files
...sion's information / opened files and starts over.
Alternatively, if you know the file which is causing notepad++ to hang, you can simply rename the file and open notepad++. This will solve the problem.
I hadn't seen this solution listed when I was googling my problem so I wanted to add it here!
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Compare double to zero using epsilon
...32k, much closer to zero than the epsilon around one we calculated above!
Now this is a toy floating point model that does not reflect all the quirks of a real floating point system , but the ability to reflect values smaller than epsilon is reasonably similar with real floating point values.
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