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The difference between the Runnable and Callable interfaces in Java
...not do everything that Callable does!
Runnable has been around since Java 1.0, but Callable was only introduced in Java 1.5 ... to handle use-cases that Runnable does not support. In theory, the Java team could have changed the signature of the Runnable.run() method, but this would have broken bin...
Maven2 property that indicates the parent directory
...
<artifactId>gmaven-plugin</artifactId>
<version>1.0-rc-5</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>execute</goal>
</goals>
...
data.frame rows to a list
... 29.3
purrr 100 24.1 28.6 32.9 44.9 40.5 183 4490 1.0
Also we can get the same result with Rcpp:
#include <Rcpp.h>
using namespace Rcpp;
// [[Rcpp::export]]
List df2list(const DataFrame& x) {
std::size_t nrows = x.rows();
std::size_t ncols = x.cols();
...
How do I parallelize a simple Python loop?
...)
And here's the output:
$ python3 -m futuretest
original inputs: [0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0]
total time to execute 33 = sum([0, 3, 3, 4, 3, 5, 1, 5, 5, 4])
time saved by parallellizing: 27.68999981880188
returned in order given: [0, 4, 16, 36, 64, 100, 144, 196, 256, 324]
...
How do I use NSTimer?
...elector:@selector(onTick:)];
NSTimer *t = [NSTimer timerWithTimeInterval: 1.0
invocation:inv
repeats:YES];
and after that, you start the timer manually whenever you need like this:
NSRunLoop *runner = [NSRunLoop currentRunLoop];
[runner addTimer: t fo...
How to match a String against string literals in Rust?
...
Editor's note: This answer pertains to an version of Rust before 1.0 and does not work in Rust 1.0
You can match on a string slice.
match stringthing.as_slice() {
"a" => println!("0"),
"b" => println!("1"),
"c" => println!("2"),
_ => println!("something else!...
Recursion in Angular directives
...
title: '3',
sub: 'tea',
children: [{
title: '3.1',
sub: 'green tea',
children: [{
title: '3.1.1',
sub: 'green coffee',
children: [{
title: '3.1.1.1',
sub: 'green milk',
children: [...
What's the complete range for Chinese characters in Unicode?
...cters from the CJKUI Ext B block.
Code points U+20000 to U+2A6D6. Unicode 3.1 (2001).
U+20000 - U+215FF
U+21600 - U+230FF
U+23100 - U+245FF
U+24600 - U+260FF
U+26100 - U+275FF
U+27600 - U+290FF
U+29100 - U+2A6DF
3) 4149 characters from the CJKUI Ext C block.
Code points U+2A700 to U+2B734. Un...
How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
...xml or the jar files deployed with this application
That URI is for JSTL 1.0, but you're actually using JSTL 1.2 which uses URIs with an additional /jsp path (because JSTL, who invented EL expressions, was since version 1.1 integrated as part of JSP in order to share/reuse the EL logic in plain JS...
Remove border radius from Select tag in bootstrap 3
...eat;
background-image: url('data:image/svg+xml;utf8,<?xml version="1.0" encoding="utf-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg xmlns="http://www.w3.org/2000/svg" width="14" height="12" version="1"><path d="M4...