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Subset of rows containing NA (missing) values in a chosen column of a data frame
...te a new data frame (new_data) with only the missing values in it.
Works best to keep a track of values that you might later drop because they had some columns with missing observations (NA).
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Including jars in classpath on commandline (javac or apt)
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The best way I found is to use java -cp *:. HelloWorld. That way all jars in my classpath are always included.
– N.N.
Mar 19 '13 at 12:29
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Javascript seconds to minutes and seconds
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2019 best variant
Format hh:mm:ss
console.log(display(60 * 60 * 2.5 + 25)) // 2.5 hours + 25 seconds
function display (seconds) {
const format = val => `0${Math.floor(val)}`.slice(-2)
const hours = seconds / 3600...
How do you reverse a string in place in C or C++?
...potential performance improvement with maybe int temp, this solution looks best. +1
– chux - Reinstate Monica
Jun 13 '14 at 22:17
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Java Replacing multiple different substring in a string at once (or in the most efficient way)
...placeEach.
A hybrid approach based on text length is possible, to get the best of both implementations.
Implementations
Consider comparing other implementations for text longer than 1 MB, including:
https://github.com/RokLenarcic/AhoCorasick
https://github.com/hankcs/AhoCorasickDoubleArrayTrie
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BackgroundWorker vs background Thread
...her reading:
Parallel Programming in the .NET Framework
Managed Threading Best Practices
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VIM Disable Automatic Newline At End Of File
... was wondering if there was some way to disable this feature. (It wouldbe best if I could disable it for specific file extensions).
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remove legend title in ggplot
...for a quick and ready approach in simple cases like theme_bw() but not the best in cases where the legend has a box around it and is positioned somewhere on the plot area (my usual approach).
– PatrickT
Dec 12 '14 at 17:44
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Password masking console application
...tic extension methods don't exist (probably for a good reason) so the next best thing is congruent naming.
/// </summary>
static public class Console
{
/// <summary>
/// Like System.Console.ReadLine(), only with a mask.
/// <...
How to find a parent with a known class in jQuery?
...nt() vs. parents()
And there is .parentsUntil() which I think will be the best.
Description: Get the ancestors of each
element in the current set of matched
elements, up to but not including the
element matched by the selector.
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