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Virtual member call in a constructor

...tual void DoSomething() { } } class Child : Parent { private string foo; public Child() { foo = "HELLO"; } protected override void DoSomething() { Console.WriteLine(foo.ToLower()); //NullReferenceException!?! } } The answer is that in fact...
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How to get all registered routes in Express?

... web application built using Node.js and Express. Now I would like to list all registered routes with their appropriate methods. ...
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How to convert CSV file to multiline JSON?

... got it to work. The code is a copy of SingleNegationElimination with the extra handling of utf-8. I tried to do it with https://docs.python.org/2.7/library/csv.html but in the end gave up. The below code worked. import csv, json csvfile = open('file.csv', 'r') jsonfile = open('file.json', 'w') ...
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Why does sun.misc.Unsafe exist, and how can it be used in the real world?

...}, such as {@link java.util.concurrent.atomic.AtomicLongArray}, require extra memory ordering guarantees which are generally not needed in these algorithms and are also expensive on most processors. SoyLatte - java 6 for osx javadoc excerpt /** Base class for sun.misc.Unsafe-based F...
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How to create a MySQL hierarchical recursive query

... is only called to make sure this condition is always true, even if the pv string would for some reason yield a falsy value. All in all, one may find these assumptions too risky to rely on. The documentation warns: you might get the results you expect, but this is not guaranteed [...] the ord...
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How disable Copy, Cut, Select, Select All in UITextView

The UITextView 's Copy, Cut, Select, Select All functionality is shown by default when I press down on the screen. But, in my project the UITextField is only read only. I do not require this functionality. Please tell me how to disable this feature. ...
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Why are only a few video games written in Java? [closed]

...ot just referring to tool programming. For most games, you don't need that extra bit of performance you get from C++, including 3D games, and if you're writing it all from scratch, it can make perfect sense to use something like XNA - in fact, there's a good chance it will. As far as commercial gam...
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Why can't decimal numbers be represented exactly in binary?

...1/3, 1/9, 1/27, or any rational in decimal notation. We do it by adding an extra symbol. For example, a line over the digits that repeat in the decimal expansion of the number. What we need to represent decimal numbers as a sequence of binary numbers are 1) a sequence of binary numbers, 2) a radix p...
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What is the difference between `git merge` and `git merge --no-ff`?

...author mentioned "specific branch topology" means that in --no-ff case an extra merge commit serves as the marker of the merge. The pros is explicit merge marker with names of the author and the merger. The cons is non-linear history that looks like a set of converging railroad tracks. A possible p...
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SOAP or REST for Web Services? [closed]

...HttpRequest object that most modern browsers support today, which adds an extra bonus of AJAX. Totally stateless operations. If an operation needs to be continued, then REST is not the best approach and SOAP may fit it better. However, if you need stateless CRUD (Create, Read, Update, and Delete) ...