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Why are C# interface methods not declared abstract or virtual?
...ual and not virtual, either.
But, you may be right, I think may be a good idea to have a specific "virtual" / "override" attribute in interfaces, in case you want to restrict the classes methods that implement a particular interface. But, that also means to have a "nonvirtual", "dontcareifvirtualor...
rails - Devise - Handling - devise_error_messages
...;%= devise_error_messages! %>" outputs an error. the above did nothing? ideas?
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How slow are .NET exceptions?
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I have no idea what people are talking about when they say they are slow only if they are thrown.
EDIT: If Exceptions aren't thrown, then that means you are doing new Exception() or something like that. Otherwise the exception is goin...
Android static object lifecycle
...rns out that using Application to store singletons is not that great of an idea, unless you are ready to recreate it:
Don't store data in the application object
so while the accepted answer is technically correct, it doesn't provide all information.
As the link above suggests, if you really want ...
What are the dangers when creating a thread with a stack size of 50x the default?
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Good idea, I'll iterate through instead. Besides that, my code is running in full trust mode, so are there any other things I should look out for?
– Sam
Jun 13 '14 at 8:47
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Why do we need a pure virtual destructor in C++?
...:color() if all it knows is that it IS-A pointer to Fruit.
So now to the idea of a "pure virtual function" comes up.
It is a rather unfortunate phrase as purity has nothing to do with it. It means that it is intended that the base class method is never to be called.
Indeed a pure virtual function ...
How to automatically generate N “distinct” colors?
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Here's an idea. Imagine an HSV cylinder
Define the upper and lower limits you want for the Brightness and Saturation. This defines a square cross section ring within the space.
Now, scatter N points randomly within this space.
Th...
Android: AsyncTask vs Service
...y have a AsyncTask object!" Thanks for pointing that out. But is it a good idea - is it something you'd recommend? Or would it be better to use more basic threading techniques in a service?
– RenniePet
Jul 30 '13 at 14:59
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“Diff” an image using ImageMagick
...mpose darken -composite ')' \
-channel RGB -combine diff.png
The idea is follows: convert both file1.png and file2.png to grayscale. Then trat the first as the red channel of the resulting image, the second as the green channel. The blue channel is formed from these two using the darken co...
What does gcc's ffast-math actually do?
... checked to see if GCC actually does this particular optimization. But the idea is the same.
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