...tivityA instead. This is what Android docs are saying about that: Normally, the system clears a task (removes all activities from the stack above the root activity) in certain situations when the user re-selects that task from the home screen. Typically, this is done if the user hasn't visited ...

...llion instances of the class or you don't create any. It will be shared by all instances. Since static methods also do not belong to a specific instance, they can't refer to instance members. In the example given, main does not know which instance of the Hello class (and therefore which instance of...

...perties for the 'window object'. When you collapse the object you can view all the properties, including the 'chrome' property. You can't use strictly equals true anymore to check in IE for window.chrome. IE used to return undefined, now it returns true. But guess what, IE11 now returns undefined ...

... goto solely for a forward jump out of structured control statements is usually considered to be OK, especially if the alternative is to have more complicated code. For Each item In itemList For Each item1 In itemList1 If item1.Text = "bla bla bla" Then Goto end_of_for ...

...ing them from a dependency injection (DI) container. This happens automatically when the container is asked to provide (resolve) an instance of the View class. The container injects the ViewModel into the View by calling a constructor of the View which accepts a ViewModel parameter; this scheme is c...

...n of document-centric recents means it can leak person information to the caller. For backwards compatibility, it will still return a small subset of its data: at least the caller's own tasks, and possibly some other tasks such as home that are known to not be sensitive. ...

...erate on different data types. The classic example is the Shape class and all the classes that can inherit from it (square, circle, dodecahedron, irregular polygon, splat and so on). With polymorphism, each of these classes will have different underlying data. A point shape needs only two co-ordin...

...ssence of pythonicity, but this is clearly much more versatile. I was initially excited to see the accepted solution with its elegant explanation, but alarmed that the object being called on to do the methods was written as a single string with all specifications built in, eliminating the involvemen...

So I'm looking to build a chat app that will allow video, audio, and text. I spent some time researching into Websockets and WebRTC to decide which to use. Since there are plenty of video and audio apps with WebRTC, this sounds like a reasonable choice, but are there other things I should consider? ...

...PathExpression expr = xpath.compile(<xpath_expression>); Then you call expr.evaluate() passing in the document defined in that code and the return type you are expecting, and cast the result to the object type of the result. If you need help with a specific XPath expressions, you should pro...