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Getting the current page
... current page. You can calculate it with:
int page = scrollView.contentOffset.x / scrollView.frame.size.width;
If you want to round up or down to the nearest page, use:
CGFloat width = scrollView.frame.size.width;
NSInteger page = (scrollView.contentOffset.x + (0.5f * width)) / width;
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In C/C++ what's the simplest way to reverse the order of bits in a byte?
While there are multiple ways to reverse bit order in a byte, I'm curious as to what is the "simplest" for a developer to implement. And by reversing I mean:
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MVC Vs n-tier architecture
I was wondering what exactly is the difference between MVC(which is an architectural pattern) and an n-tier architecture for an application. I searched for it but couldn't find a simple explanation. May be I am a bit naive on MVC concepts, so if anyone can explain the difference then it would be gre...
Can one do a for each loop in java in reverse order?
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The List (unlike the Set) is an ordered collection and iterating over it does preserve the order by contract. I would have expected a Stack to iterate in the reverse order but unfortunately it doesn't. So the simplest solution I can think of is t...
Why does Math.Round(2.5) return 2 instead of 3?
In C#, the result of Math.Round(2.5) is 2.
15 Answers
15
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Is it possible to change only the alpha of a rgba background colour on hover?
I have a set of <a> tags with differing rgba background colours but the same alpha. Is it possible to write a single css style that will change only the opacity of the rgba attribute?
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Segmentation fault on large array sizes
...es are only put on the heap with malloc, new, etc.
– Seth Johnson
Dec 4 '09 at 16:05
6
All automa...
Why does pycharm propose to change method to static
...Charm "thinks" that you might have wanted to have a static method, but you forgot to declare it to be static (using the @staticmethod decorator).
PyCharm proposes this because the method does not use self in its body and hence does not actually change the class instance. Hence the method could be ...
How can I recursively find all files in current and subfolders based on wildcard matching?
How can I recursively find all files in current and subfolders based on wildcard matching?
16 Answers
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TypeScript function overloading
Section 6.3 of the TypeScript language spec talks about function overloading and gives concrete examples on how to implement this. However if I try something like this:
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