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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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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 ...
How to print to the console in Android Studio?
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edited Jul 12 '15 at 1:09
nbro
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answered M...
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...
C# listView, how do I add items to columns 2, 3 and 4 etc?
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Dayan
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answered Jan 23 '09 at 15:08
InisheerInisheer
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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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What does a Ajax call response like 'for (;;); { json data }' mean? [duplicate]
... embossemboss
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Get a substring of a char* [duplicate]
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char subbuff[5];
memcpy( subbuff, &buff[10], 4 );
subbuff[4] = '\0';
Job done :)
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