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How to find the size of localStorage
...e.
I believe that the default amount of space is 5MB, although I have not tested it personally.
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Extract hostname name from string
...(url)); // returns youtube.com
I can't use an npm package, so below only tests extractHostname.
function extractHostname(url) {
var hostname;
//find & remove protocol (http, ftp, etc.) and get hostname
if (url.indexOf("//") > -1) {
hostname = url.split('/')[2]...
what is faster: in_array or isset? [closed]
....
These can be demonstrated by using an array with values (10,000 in the test below), forcing in_array to do more searching.
isset: 0.009623
in_array: 1.738441
This builds on Jason's benchmark by filling in some random values and occasionally finding a value that exists in the array. All ran...
Open a URL in a new tab (and not a new window)
...the default user preference in most browsers is for new tabs, so a trivial test on a browser where that preference hasn't been changed will not demonstrate this.)
CSS3 proposed target-new, but the specification was abandoned.
The reverse is not true; by specifying dimensions for the window in the ...
Difference between require, include, require_once and include_once?
...ile only a single time in the current file.
Here in the example I have an test1.php.
<?php
echo "today is:".date("Y-m-d");
?>
and in another file that I have named test2.php
<?php
require_once('test1.php');
require_once('test1.php');
?>
as you are watching the m requir...
How to detect IE11?
...he user agent if navigator.appName returns Netscape, something like (the untested);
function getInternetExplorerVersion()
{
var rv = -1;
if (navigator.appName == 'Microsoft Internet Explorer')
{
var ua = navigator.userAgent;
var re = new RegExp("MSIE ([0-9]{1,}[\\.0-9]{0,})"...
How do I set up a basic Ruby project?
...ct with 10 ~ 20 classes/files. I need some gems and I want to use RSpec as test framework.
4 Answers
...
Check if string contains only digits
...
how about
let isnum = /^\d+$/.test(val);
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What does (x ^ 0x1) != 0 mean?
...expression is true.
Conversely the expression is false if x == 1.
So the test is the same as:
if (x != 1)
and is therefore (arguably) unnecessarily obfuscated.
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Why do we use __init__ in Python classes?
...ill be a MyInteger), but we'll ignore now. In real code, we wouldn't; we'd test it to make sure, and maybe even coerce it ("you're not an integer? by golly, you have 10 nanoseconds to become one! 9... 8....")
We could even define fractions. Fractions also know how to add themselves.
class MyFracti...