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Why can't I define a static method in a Java interface?
EDIT: As of Java 8, static methods are now allowed in interfaces.
24 Answers
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“CAUTION: provisional headers are shown” in Chrome debugger
I noticed a strange caution message when looking at downloaded resources using Google chrome inspector ( F12 ):
34 Answers
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Why does calling a method in my derived class call the base class method?
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There's a difference between new and virtual/override.
You can imagine, that a class, when instantiated, is nothing more than a table of pointers, pointing to the actual implementation of its methods. The following image should visualize this pretty well:
Now there are different ways, a m...
Reset Entity-Framework Migrations
I've mucked up my migrations, I used IgnoreChanges on the initial migration, but now I want to delete all my migrations and start with an initial migration with all of the logic.
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Are trailing commas in arrays and objects part of the spec?
Are trailing commas standard in JavaScript, or do most browsers like Chrome and Firefox just tolerate them?
6 Answers
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When can I use a forward declaration?
I am looking for the definition of when I am allowed to do forward declaration of a class in another class's header file:
1...
What is the difference between dynamic and static polymorphism in Java?
Can anyone provide a simple example that explains the difference between Dynamic and Static polymorphism in Java?
14 An...
How to force a line break in a long word in a DIV?
Okay, this is really confusing me. I have some content inside of a div like so:
16 Answers
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Can overridden methods differ in return type?
... return type is assignable to the return type of the method you are overriding, it's allowed.
For example:
class ShapeBuilder {
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public Shape build() {
....
}
class CircleBuilder extends ShapeBuilder{
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@Override
public Circle build() {
....
}
This is specified ...
Environment variable substitution in sed
...ms hard to diagnose. Potential problems:
You may need double quotes, as in sed 's/xxx/'"$PWD"'/'
$PWD may contain a slash, in which case you need to find a character not contained in $PWD to use as a delimiter.
To nail both issues at once, perhaps
sed 's@xxx@'"$PWD"'@'
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