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How do CDI and EJB compare? interact?
...ations (Glassfish, JBoss AS, Websphere, etc).
EJB3 beans were retrofitted from the old legacy EJB2 component model* and were the first beans in Java EE to be managed beans via an annotation. EJB3 beans feature dependency injection, declarative transactions, declarative security, pooling, concurren...
What is the apply function in Scala?
I never understood it from the contrived unmarshalling and verbing nouns ( an AddTwo class has an apply that adds two!) examples.
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back button callback in navigationController in iOS
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This is also called when the user pans from the left edge (interactivePopGestureRecognizer). In my case, I'm specifically looking for when the user presses back while NOT panning from the left edge.
– Kyle Clegg
Mar 20 '14 at...
Everyauth vs Passport.js?
...ed (almost functional style) code. Much of the power of Node itself comes from this fact, and Passport follows suit.
Modular
Passport employs a strategy design pattern to define a clear separation of concerns between the core module and various authentication mechanisms. This has a number of ben...
JavaScript DOM remove element
...most browsers, there's a slightly more succinct way of removing an element from the DOM than calling .removeChild(element) on its parent, which is to just call element.remove(). In due course, this will probably become the standard and idiomatic way of removing an element from the DOM.
The .remove(...
Chain-calling parent initialisers in python [duplicate]
Consider this - a base class A, class B inheriting from A, class C inheriting from B. What is a generic way to call a parent class initialiser in an initialiser? If this still sounds too vague, here's some code.
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Excluding directory when creating a .tar.gz file
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I get tar: Error exit delayed from previous errors. in macos
– prayagupd
Jun 28 '18 at 23:32
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Strings as Primary Keys in SQL Database [closed]
...ar with databases and the theories behind how they work. Is it any slower from a performance standpoint (inserting/updating/querying) to use Strings for Primary Keys than integers?
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Why does this Java program terminate despite that apparently it shouldn't (and didn't)?
...hose 4 write operations can be freely reordered by the compiler / JVM.
So from the perspective of the reading thread, it is a legal execution to read x with its new value but y with its default value of 0 for example. By the time you reach the println statement (which by the way is synchronized and...
Why is UnhandledExceptionEventArgs.ExceptionObject an object and not an Exception?
...xception because it's possible to throw objects in .Net that do not derive from System.Exception. This is not possible in C# or VB.Net but it is possible in other CLR based languages. Hence the API must support this possibility and uses the type object.
So while it shouldn't ever be null, it ma...