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Aggregate / summarize multiple variables per group (e.g. sum, mean)
...t, year + month ~ variable, sum)
# year month x1 x2
1 2000 1 -80.83405 -224.9540159
2 2000 2 -223.76331 -288.2418017
3 2000 3 -188.83930 -481.5601913
4 2000 4 -197.47797 -473.7137420
5 2000 5 -259.07928 -372.4563522
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How to use string.replace() in python 3.x
...rams
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Android Studio with Google Play Services
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All those answers are wrong, since the release of gradle plugin v0.4.2 the setup of google play services under android studio is straight forward. You don't need to import any jar or add any project library nor add any new module under android studio. What you have to do is to add the corr...
Eclipse returns error message “Java was started but returned exit code = 1”
...fter -vmargs is passed directly to the JVM.
-vm
c:/wherever/java/jdk1.6.0_21/jre/bin/server/jvm.dll
-vmargs...
...to your eclipse.ini file, pointing to the JDK you want to use, and check that the required Java version is at least as new as your JDK. This is the path for a Windows system. More ...
java.lang.OutOfMemoryError: bitmap size exceeds VM budget - Android
...cle has some tips that might help:
http://android-developers.blogspot.de/2009/01/avoiding-memory-leaks.html
In particular, using static variables is likely to make things worse, not better. You might need to add code that removes callbacks when your application redraws -- but again, there's not en...
Ineligible Devices section appeared in Xcode 6.x.x
...t the Updates below before restarting Xcode
Update: in Yosemite, Xcode 6.0.1 does not support iOS 8.1, you have to update to Xcode 6.1 if you want to debug on iOS 8.1 device, or you will probably have the same problem as described in the topic
Update 2: Xcode Beta 6.3 does not support iOS 8.2 (and...
Joining three tables using MySQL
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edited Jul 20 '17 at 5:26
Peter Mortensen
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What is meant by the term “hook” in programming?
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answered Jan 21 '09 at 23:55
MicahMicah
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List OrderBy Alphabetical Order
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704
If you mean an in-place sort (i.e. the list is updated):
people.Sort((x, y) => string.Compa...