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How do I create directory if none exists using File class in Ruby?
...s in the stdlib: ruby-doc.org/stdlib-1.9.3/libdoc/fileutils/rdoc/FileUtils.html
– Eureka
Sep 27 '12 at 8:59
Oh ok. I m...
How to reload or re-render the entire page using AngularJS
... $routeProvider then you will now need to include angular-route.js in your HTML:
– Alvaro Joao
Feb 4 '16 at 16:02
3
...
How to play a notification sound on websites?
...e" src="' + filename +'.mp3">';
document.getElementById("sound").innerHTML='<audio autoplay="autoplay">' + mp3Source + oggSource + embedSource + '</audio>';
}
<button onclick="playSound('bing');">Play</button>
<div id="sound"></div>
Browser support
<a...
Align contents inside a div
I use css style text-align to align contents inside a container in HTML. This works fine while the content is text or the browser is IE. But otherwise it does not work.
...
Global and local variables in R
...nding how to use them:
http://stat.ethz.ch/R-manual/R-devel/library/base/html/environment.html
http://stat.ethz.ch/R-manual/R-devel/library/base/html/get.html
Here you have a small example:
test.env <- new.env()
assign('var', 100, envir=test.env)
# or simply
test.env$var <- 100
get('var...
What is the order of precedence for CSS?
...
There are several rules ( applied in this order ) :
inline css ( html style attribute ) overrides css rules in style tag and css file
a more specific selector takes precedence over a less specific one
rules that appear later in the code override earlier rules if both have the same specific...
JavaScript dependency management: npm vs. bower vs. volo [closed]
... modules called packages and Bower manages front-end components (i.e. css, html, and JavaScript) called components. npm is also used to install bower. Here is an expansive article on npm and bower (does not cover volo) it goes into plenty of detail.
...
Override body style for content in an iframe
...Uncaught DOMException: Failed to read the 'contentDocument' property from 'HTMLIFrameElement': Blocked a frame with origin "xxxxxxxxx.com" from accessing a cross-origin frame.
– Alex Stanese
Dec 9 '16 at 8:50
...
Java: random long number in 0
...ccording to https://docs.oracle.com/javase/1.5.0/docs/api/java/util/Random.html nextInt is implemented as
public int nextInt(int n) {
if (n<=0)
throw new IllegalArgumentException("n must be positive");
if ((n & -n) == n) // i.e., n is a power of 2
return...
Getting the minimum of two values in SQL
...inks :
MySQL http://dev.mysql.com/doc/refman/5.0/en/comparison-operators.html
Postgres https://www.postgresql.org/docs/current/functions-conditional.html
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