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How to sum a variable by group
...quency, by=list(Category=x$Category), FUN=sum)
Category x
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In the example above, multiple dimensions can be specified in the list. Multiple aggregated metrics of the same data type can be incorporated via cbind:
aggregate(cbind(x$Frequency, x$Metric2,...
List all of the possible goals in Maven 2?
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The goal you indicate in the command line is linked to the lifecycle of Maven. For example, the...
How to downgrade or install an older version of Cocoapods
... of cocoa pods via the following command:
sudo gem install cocoapods -v 0.25.0
You can use older installed versions with following command:
pod _0.25.0_ setup
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Difference between declaring variables before or in loop?
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int a[] = {1,2,}; Weird comma allowed. Any particular reason?
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set date in input type date
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Fiddle link : http://jsfiddle.net/7LXPq/93/
Two problems in this:
Date control in HTML 5 acce...
Hidden Features of JavaScript? [closed]
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How to position a div in the middle of the screen when the page is bigger than the screen
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just add position:fixed and it will keep it in view even if you scroll down. see it at http://...
How to round float numbers in javascript?
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answered Feb 26 '12 at 13:24
davindavin
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