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Why doesn't 'ref' and 'out' support polymorphism?
...pass a variable of type Animal to N?
Hmm.
Well, why not? N cannot read from n, it can only write to it, right? You write a Tiger to a variable of type Animal and you're all set, right?
Wrong. The rule is not "N can only write to n".
The rules are, briefly:
1) N has to write to n before N ...
Java default constructor
...h one of the following is a default constructor and what differentiates it from any other constructor?
13 Answers
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if else statement in AngularJS templates
I want to do a condition in an AngularJS template. I fetch a video list from the Youtube API. Some of the videos are in 16:9 ratio and some are in 4:3 ratio.
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Do you need to dispose of objects and set them to null?
...o properly explain that aspect of CLR, I'll need to explain a few concepts from C++ and C#.
Actual variable scope
In both languages the variable can only be used in the same scope as it was defined - class, function or a statement block enclosed by braces. The subtle difference, however, is that i...
How to repeat a “block” in a django template
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Titles should be set from within the templates, not be provided by the context, you need to had a way to define this "title" variable, otherwise this is not a good solution.
– Guillaume Esquevin
Sep 22 '10 a...
Find size of an array in Perl
...oks quite clear alone like this, but I find that the extra line takes away from clarity when part of other code. It's useful for teaching what @array does in scalar context, and maybe if you want to use $size more than once.
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Can Protractor and Karma be used together?
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Is this still true that we should not run Protractor from Karma?
– ErikAGriffin
Mar 22 '15 at 23:10
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Difference between maven scope compile and provided for JAR packaging
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From the Maven Doc:
compile
This is the default scope, used if none is specified. Compile
dependencies are available in all classpaths of a project.
Furthermore, those dependencies are propagated to dependent...
Junit - run set up method once
...have said to AlexR, his solution requires all the test classes to subclass from a CommonTest class if it is only to run once. But it is simple as simple can be, and IMHO you probably shouldn't use a "fancy" framework-supplied solution when a simple mechanism is available from the language. Unless ...
How do I unlock a SQLite database?
...e is how i fixed it:
echo ".dump" | sqlite old.db | sqlite new.db
Taken from: http://random.kakaopor.hu/how-to-repair-an-sqlite-database
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