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How to implement a rule engine?
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This snippet compiles the Rules into fast executable code (using Expression trees) and does not need any complicated switch statements:
(Edit : full working example with generic method)
public Func<User, bool> CompileRule...
Implementation difference between Aggregation and Composition in Java
...s Car {
private Engine engine;
void setEngine(Engine engine) {
this.engine = engine;
}
void move() {
if (engine != null)
engine.work();
}
}
In the case of composition, the Engine is completely encapsulated by the Car. There is no way for the outside world to get a refere...
advantage of tap method in ruby
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they would have to follow all the three lines and then recognize that it is just creating an instance named user.
If it were:
user = User.new.tap do |u|
u.username = "foobar"
u.save!
end
then that would be immediately clear. A reader would not have to read what is inside the block to know ...
How do I capture response of form.submit
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You won't be able to do this easily with plain javascript. When you post a form, the form inputs are sent to the server and your page is refreshed - the data is handled on the server side. That is, the submit() function doesn't actually return anythin...
How can I determine if a .NET assembly was built for x86 or x64?
I've got an arbitrary list of .NET assemblies.
15 Answers
15
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Is there a good Valgrind substitute for Windows?
I was looking into Valgrind to help improve my C coding/debugging when I discovered it is only for Linux - I have no other need or interest in moving my OS to Linux so I was wondering if there is a equally good program for Windows.
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Why do I have to access template base class members through the this pointer?
... in the derived class. However, with the code below, I have to use this->x . Why?
3 Answers
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How to get a user's client IP address in ASP.NET?
We have Request.UserHostAddress to get the IP address in ASP.NET, but this is usually the user's ISP's IP address, not exactly the user's machine IP address who for example clicked a link. How can I get the real IP Address?
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Enum Naming Convention - Plural
I'm asking this question despite having read similar but not exactly what I want at C# naming convention for enum and matching property
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How to style the parent element when hovering a child element?
I know that there does not exist a CSS parent selector , but is it possible to style a parenting element when hovering a child element without such a selector?
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