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What is the difference between Modal and Push segue in Storyboards?
...eep stack. As long as you are taking care of objects you might be passing from one VC to another, the runtime will take care of the navigation stack. See the image for a visual indication:
A modal Segue is just one VC presenting another VC modally. The VCs don't have to be part of a navigation ...
CABasicAnimation resets to initial value after animation completes
..., your instance will be retained by the animation. So, after calling removeFromSuperview if you forget to remove/destroy the animation by yourself, dealloc for instance will not be called. You'll have a memory leak.
– emrahgunduz
Jan 22 '15 at 14:07
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What's the algorithm to calculate aspect ratio?
...ich shows one way to detect the screen size and calculate the aspect ratio from that. This works in FF3, I'm unsure what support other browsers have for screen.width and screen.height.
<html><body>
<script type="text/javascript">
function gcd (a, b) {
retur...
Is there a way to measure how sorted a list is?
...hat appear out of order according to some ordering < on the set of T's.
From Wikipedia:
Formally, let A(1), A(2), ..., A(n) be a sequence of n numbers.If i < j and A(i) > A(j), then the pair (i,j) is called an inversion of A.
The inversion number of a sequence is one common measure of its ...
Subtract 7 days from current date
It seems that I can't subtract 7 days from the current date. This is how i am doing it:
11 Answers
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What are 'closures' in .NET?
...
Closures are functional values that hold onto variable values from their original scope. C# can use them in the form of anonymous delegates.
For a very simple example, take this C# code:
delegate int testDel();
static void Main(string[] args)
{
int foo = 4;
...
Is there a HTML opposite to ?
...page.</p>
</body>
</html>
_test.html
<p>This is from an HTML fragment document</p>
result
<p>This is content at the top of the page.</p>
<p>This is from an HTML fragment document</p>
<p>This is content at the bottom of the page.</p...
Cleaning up the iPhone simulator
...s.
Manually delete all those files/directories to remove all applications from the simulator.
I know there is some way to add scripts to the build process in XCode.
Also it looks as if XCode changes the GUID it uses each build (the directory where my app sits changes between builds in XCode), so ...
Difference between abstract class and interface in Python
...I don't know what "substantial" means. It's "real" -- it has substance -- from a design perspective. But from a language perspective there may be no support. You could adopt conventions to distinguish between an abstract class and an interface class definition in Python.
– S...
At runtime, find all classes in a Java application that extend a base class
...hen using ClassLoader.getResources() to enumerate all files with this name from all jars. This allows each jar to export its own providers and you can instantiate them by reflection using Class.forName()
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