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What does T&& (double ampersand) mean in C++11?
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How to check an Android device is HDPI screen or MDPI screen?
...'s HDPI
// return 2.0 if it's XHDPI
// return 3.0 if it's XXHDPI
// return 4.0 if it's XXXHDPI
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How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?
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The Easy Way
If you're a typical developer, you can install the easy way, using instructions at...
For each row return the column name of the largest value
...ample reproducible):
DF <- data.frame(V1=c(2,8,1),V2=c(7,3,5),V3=c(9,6,4))
colnames(DF)[apply(DF,1,which.max)]
[1] "V3" "V1" "V2"
A faster solution than using apply might be max.col:
colnames(DF)[max.col(DF,ties.method="first")]
#[1] "V3" "V1" "V2"
...where ties.method can be any of "rando...
Does Swift support reflection?
...ple"
From mchambers gist, here:
https://gist.github.com/mchambers/fb9da554898dae3e54f2
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Most concise way to convert a Set to a List
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436
List<String> list = new ArrayList<String>(listOfTopicAuthors);
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Version of SQLite used in Android?
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482
UPDATE OCT 2016: Here is a link to the updated official docs which includes the main points in...
What happens to git commits created in a detached HEAD state?
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answered Apr 2 '12 at 21:40
Dietrich EppDietrich Epp
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How do I check if a number is positive or negative in C#?
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juancazalla
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answered Nov 4 '10 at 17:25
Simon FischerSimon Fischer
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Bash empty array expansion with `set -u`
...]+"${arr[@]}"} (column +"). Of note, several other expansions fail in Bash 4.2, including (unfortunately) the shorter ${arr[@]:0} idiom, which doesn't just produce an incorrect result but actually fails. If you need to support versions prior to 4.4, and in particular 4.2, this is the only working id...