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Fastest way to find second (third…) highest/lowest value in vector or column
...mallest element of x
Benchmarks below against most popular answers.
For 10 thousand numbers:
N = 10000
x = rnorm(N)
maxN <- function(x, N=2){
len <- length(x)
if(N>len){
warning('N greater than length(x). Setting N=length(x)')
N <- length(x)
}
sort(x,...
How to sort a HashMap in Java [duplicate]
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answered Apr 23 '09 at 6:57
pgraspgras
11.9k33 gold badges3434 silver badges4545 bronze badges
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Read-only list or unmodifiable list in .NET 4.0
From what I can tell, .NET 4.0 still lacks read-only lists. Why does the framework still lack this functionality? Isn't this one of the commonest pieces of functionality for domain-driven design ?
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When would you use the different git merge strategies?
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307
I'm not familiar with resolve, but I've used the others:
Recursive
Recursive is the default f...
object==null or null==object?
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140
This is probably a habit learned from C, to avoid this sort of typo (single = instead of a doubl...
How to replace strings containing slashes with sed?
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280
The easiest way would be to use a different delimiter in your search/replace lines, e.g.:
s:?pa...
Read a file one line at a time in node.js?
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Since Node.js v0.12 and as of Node.js v4.0.0, there is a stable readline core module. Here's the easiest way to read lines from a file, without any external modules:
const fs = require('fs');
const readline = require('readline');
async fu...
How to define Gradle's home in IDEA?
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480
You can write a simple gradle script to print your GRADLE_HOME directory.
task getHomeDir {
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Finding duplicate values in MySQL
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answered Mar 27 '09 at 4:24
leviklevik
97.8k2424 gold badges6868 silver badges8989 bronze badges
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Git says “Warning: Permanently added to the list of known hosts”
... filename /etc/ssh/ssh_known_hosts
Warning: Permanently added 'github.com,207.97.227.239' (RSA) to the list of known hosts.
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