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Find merge commit which include a specific commit

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What does .SD stand for in data.table in R

...his is your data.table: DT = data.table(x=rep(c("a","b","c"),each=2), y=c(1,3), v=1:6) setkey(DT, y) DT # x y v # 1: a 1 1 # 2: b 1 3 # 3: c 1 5 # 4: a 3 2 # 5: b 3 4 # 6: c 3 6 Doing this may help you see what .SD is: DT[ , .SD[ , paste(x, v, sep="", collapse="_")], by=y] # y V1 # 1...
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Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array

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What is the HTML tabindex attribute?

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Using awk to print all columns from the nth to the last

... 516 will print all but very first column: awk '{$1=""; print $0}' somefile will print all but tw...
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Any way to properly pretty-print ordered dictionaries?

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How do I specify multiple targets in my podfile for my Xcode project?

... CocoaPods 1.0 has changed the syntax for this. It now looks like this: def shared_pods pod 'SSKeychain', '~> 0.1.4' pod 'INAppStoreWindow', :head pod 'AFNetworking', '1.1.0' pod 'Reachability', '~> 3.1.0' po...
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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?

... 91 The order of evaluation of subexpressions, including the arguments of a function call and oper...
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Setting JDK in Eclipse

... 146 You manage the list of available compilers in the Window -> Preferences -> Java -> In...
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When is memoization automatic in GHC Haskell?

I can't figure out why m1 is apparently memoized while m2 is not in the following: 4 Answers ...