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Abstract class in Java

...ethod that implements abstractMethod()! So there's no way for the JVM to know what it's supposed to do when it gets something like new ImplementingClass().abstractMethod(). Here's a correct ImplementingClass. public class ImplementingClass extends AbstractClass { public void abstractMethod() ...
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“Uncaught TypeError: Illegal invocation” in Chrome

...Error: Illegal invocation. However, alert.call(window) works fine, because now alert is executed in its original scope. If you use .call() with your object like that: support.animationFrame.call(window, function() {}); it works fine, because requestAnimationFrame is executed in scope of window i...
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Pros and cons of using sbt vs maven in Scala project [closed]

...clear list of requirements or a description of your environment, previous knowledge, etc. FWIW, there are more opinions in this scala mailing list thread. My 2c are: Go with sbt if you don't have specific requirements for simple projects, it's totally effortless (you don't even need a build file...
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Why can't I have “public static const string S = ”stuff"; in my Class?

...{ return MyClass.MyUppercase_Public_Const_Int; } } Well, now I realize this question was asked 4 years ago, but since I put around 2 hours of work, consisting of trying all sorts of different ways of answering and code formatting, into this answer, I'm still posting it. :) But, f...
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How to implement an ordered, default dict? [duplicate]

... It's now offical Guido approved it. – Fruch Dec 20 '17 at 21:28  |  show...
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Could not find an implementation of the query pattern

... Thank, I was indeed missing my equality, which was stupid of me. But I now I am getting the following error: Error 1 Could not find an implementation of the query pattern for source type 'SilverlightApplication1.Web.tblPersoon'. 'Where' not found. – Schoof ...
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Chrome extension: accessing localStorage in content script

... it will be the storage from that webpage, not the extension page storage. Now, to let your content script to read your extension storage (where you set them from your options page), you need to use extension message passing. The first thing you do is tell your content script to send a request to yo...
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dd: How to calculate optimal blocksize? [closed]

...dmittedly, it's been a while since I did that. I use a mebibyte by default now, or just let dd pick the size.) share | improve this answer | follow | ...
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Difference between 3NF and BCNF in simple terms (must be able to explain to an 8-year old)

...t key. Because each pizza must have exactly one of each topping type, we know that (Pizza, Topping Type) is a candidate key. We also know intuitively that a given topping cannot belong to different types simultaneously. So (Pizza, Topping) must be unique and therefore is also a candidate key. So...
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Representing and solving a maze given an image

... @Whymarrh Well, for "Just this image" you now actually have an answer. Do you have any specific questions? Items 1-4 from my list are the manual processing I was asking about. Item 5 is a BFS - the very basic algorithm for graphs, but it can be applied to image direc...