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What does it mean: The serializable class does not declare a static final serialVersionUID field? [d
...ad with technical terms. Is it possible to explain this issue with simple words?
5 Answers
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What underlies this JavaScript idiom: var self = this?
I saw the following in the source for WebKit HTML 5 SQL Storage Notes Demo :
10 Answers
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Checking images for similarity with OpenCV
Does OpenCV support the comparison of two images, returning some value (maybe a percentage) that indicates how similar these images are? E.g. 100% would be returned if the same image was passed twice, 0% would be returned if the images were totally different.
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How to set HTTP headers (for cache-control)?
How to enable browser caching for my site? Do I just put cache-control:public somewhere up in my header like this?
8 Answer...
Datetime - Get next tuesday
...ean by "next Tuesday", but this code gives you "the next Tuesday to occur, or today if it's already Tuesday":
DateTime today = DateTime.Today;
// The (... + 7) % 7 ensures we end up with a value in the range [0, 6]
int daysUntilTuesday = ((int) DayOfWeek.Tuesday - (int) today.DayOfWeek + 7) % 7;
Da...
to drawRect or not to drawRect (when should one use drawRect/Core Graphics vs subviews/images and wh
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Stick to UIKit and subviews whenever you can. You can be more productive, and take advantage of all the OO mechanisms that should things easier to maintain. Use Core Graphics when you can't get the performance you need out of UIKit, or you know trying to hack together drawing effec...
Who is “us” and who is “them” according to Git?
..., you can find some files marked as deleted by us in the git status report. Who is us according to Git and why?
2 Ans...
Is there a better way of writing v = (v == 0 ? 1 : 0); [closed]
...at the variable is initialised properly, i.e. that it only has the value 0 or 1.
Another method that is shorter but uses a less common operator:
v ^= 1;
Edit:
To be clear; I never approached this question as code golf, just to find a short way of doing the task without using any obscuring trick...
Why is my Git Submodule HEAD detached from master?
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EDIT:
See @Simba Answer for valid solution
submodule.<name>.update is what you want to change, see the docs - default checkout
submodule.<name>.branch specify remote branch to be tracked - default master
OLD ANSWER:
Personal...
Is there a difference between foo(void) and foo() in C++ or C?
...) means "a function foo taking no arguments"
By writing foo(void), therefore, we achieve the same interpretation across both languages and make our headers multilingual (though we usually need to do some more things to the headers to make them truly cross-language; namely, wrap them in an extern "...