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What is the purpose of “!” and “?” at the end of method names?
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It's "just sugarcoating" for readability, but they do have common meanings:
Methods ending in ! perform some permanent or potentially dangerous change; for example:
Enumerable#sort returns a sorted version of the object while Enumerable#sort! sorts it...
How do you change a repository description on GitHub?
...d you have one or more files in your repo, which I only figured out when I read the answer below.
– kasimir
Sep 8 at 18:07
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What does 'var that = this;' mean in JavaScript?
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I read that, did not understand because it had no detail, searched on Google, found this page. Where I am again pointed to the same sentence. Hence the downvote.
– Aditya M P
Feb 21 '13 at...
How do you reverse a string in place in JavaScript?
...id the `????` symbol go? Whoops!
If you’re wondering why this happens, read up on JavaScript’s internal character encoding. (TL;DR: ???? is an astral symbol, and JavaScript exposes it as two separate code units.)
But there’s more:
// To see which symbols are being used here, check:
// http...
On localhost, how do I pick a free port number?
... @jonEbird Does socket.SO_REUSEADDR really help in this case? From what I read, it is only relevant that the socket which is trying to bind has SO_REUSEADDR and it is irrelevant whether that flag is set on the lingering socket.
– Karl Bartel
Feb 18 at 16:37
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How to do stateless (session-less) & cookie-less authentication?
...e simultaneous users. Load testing here would definitely help though. If I read the question correctly, this would be your encrypted token mechanism - although, I would strongly suggest that you use a cryptographically random token of say 32 characters, versus using a combination of username + passw...
How to pipe stdout while keeping it on screen ? (and not to a output file)
...grams or shell procedures that wish to be sure of
writing messages to or reading data from the terminal no matter how
output has been redirected. It can also be used for applications that
demand the name of a file for output, when typed output is desired and
it is tiresome to find out what t...
How to Deep clone in javascript
...constructor) {
// would not advice to do that, reason? Read below
result = new item.constructor();
} else {
result = item;
}
}
} else {
result = item;
}
}
retu...
Swift Programming: getter/setter in stored property
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Ok. Reading through Apples documentation on Swift I found this:
If you assign a value to a property within its own didSet observer,
the new value that you assign will replace the one that was just set.
So all you have to ...
Does python have an equivalent to Java Class.forName()?
...hon is a lot easier and far more flexible than it is in Java.
I recommend reading this tutorial
There's no direct function (that I know of) which takes a fully qualified class name and returns the class, however you have all the pieces needed to build that, and you can connect them together.
One ...