... Very informative, but see stackoverflow.com/questions/274626#274636 for an example of how slicing occurs during method calls (which underscores the danger a little better than the plain assignment example). – Blair Conrad Nov ...

...n that the class is abstract and to how it should be used. You could still come up with a better name than AbstractTruck and use BaseTruck or DefaultTruck instead since the abstract is in the definition. But since Abstract classes should never be part of any public facing interface I believe it is a...

... to understand unowned self. A reason to use weakSelf simply being 'self becomes an optional', is not enough for me. Why would I specifically want to use 'unowned self' stackoverflow.com/questions/32936264/… – user1951992 Oct 5 '15 at 13:41 ...

... Since originally writing this answer, a new specification has reached recommendation status thanks to the W3C. The Page Visibility API (on MDN) now allows us to more accurately detect when a page is hidden to the user. document.addEventListener("visibilitychange", onchange); Current browser ...

...nt the natural ordering you can use the constructor parameter that takes a Comparator<T>. Alternatively, you can use Multisets (also known as Bags), that is a Set that allows duplicate elements, instead and there are third-party implementations of them. Most notably from the Guava libraries t...

...nce is simply null. So, it really is legitimately an actual null reference coming out of e.g. Activator.CreateInstance(typeof(int?)), not an int?. There's probably an int? internally but it disappears during boxing. – Jonathan Gilbert Jul 14 '16 at 17:52 ...

...f the connection. An established connection is uniquely identified by the combination of client-side and server-side IP/Port pairs. Multiple connections on the same server can share the same server-side IP/Port pair as long as they are associated with different client-side IP/Port pairs, and the s...

...5 and Version 3 UUIDs use the SHA1 and MD5 hash functions respectively, to combine a namespace with a piece of already unique data to generate a UUID. This will, for example, allow you to produce a UUID from a URL. Collisions here are only possible if the underlying hash function also has a collisio...

...ion has no room for a state." -> How the hell can languages like Java accomplish this then? Well, of course, because that single, global function is created at runtime and embeds the state (or rather the reference to it) in its own code. That is the whole point - there should not be a single, glo...

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