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How can I shuffle an array? [duplicate]
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You could use the Fisher-Yates Shuffle (code adapted from this site):
function shuffle(array) {
let counter = array.length;
// While there are elements in the array
while (counter > 0) {
// Pick a random index
let index = Math.floor(Math.random() * counte...
Infinity symbol with HTML
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@FranciscoCorralesMorales also MDN site is very good and increasing in data available.
– PhoneixS
Jun 25 '14 at 15:07
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A simple example for someone who wants to understand Dynamic Programming [closed]
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Check out this site: Dynamic Programming Practice Problems
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Re-enabling window.alert in Chrome
I accidently checked the "disable alerts from this site" box in Chrome, and now I cannot get any window.alert to work on my localhost.
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Simplest PHP example for retrieving user_timeline with Twitter API version 1.1
...loper account on Twitter
You need to visit the official Twitter developer site and register for a developer account.
This is a free and necessary step to make requests for the v1.1 API.
2. Create an application: Create an application on the Twitter developer site
What? You thought you could make ...
What is the dependency inversion principle and why is it important?
...pt instead of on an implementation, you reduce the need for change at call sites.
Effectively, the DIP reduces coupling between different pieces of code. The idea is that although there are many ways of implementing, say, a logging facility, the way you would use it should be relatively stable in t...
Trusting all certificates using HttpClient over HTTPS
... Before you decide to trust all certificates, you probably should know the site full well and won't be harmful of it to end-user.
Indeed, the risk you take should be considered carefully, including the effect of hacker's mock site mentioned in the following comments that I deeply appreciated. In so...
What is the difference between a port and a socket?
...h, port numbers are made visible to the casual user. For example, some Web sites a person visits on the Internet use a URL like the following:
http://www.mairie-metz.fr:8080/ In this example, the number 8080 refers to the port number used by the Web browser to connect to the Web server. Normally, a...
Should CSS always preceed Javascript?
...ll have a performance penalty on 15% of users globally; YMMV based on your site's specific audience. (And remember that number is shrinking.)
On mobile browsers, it's a little harder to get definitive numbers simply due to how heterogeneous the mobile browser and OS landscape is. Since speculativ...
Elegant setup of Python logging in Django
... the logger created above.
If my app is going to be potentially used in a site which doesn't configure logging in settings.py, I define a NullHandler somewhere as follows:
#someutils.py
class NullHandler(logging.Handler):
def emit(self, record):
pass
null_handler = NullHandler()
an...