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When to use PNG or JPG in iPhone development?

... PNG's are pixel perfect (non-lossy), and require very little extra CPU energy to display. However, large PNGs may take longer to read from storage than more compressed image formats, and thus be slower to display. JPG's are smaller to store, but lossy (amount ...
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What are the differences between a pointer variable and a reference variable in C++?

I know references are syntactic sugar, so code is easier to read and write. 41 Answers ...
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In a PHP project, what patterns exist to store, access and organize helper objects? [closed]

How do you organize and manage your helper objects like the database engine, user notification, error handling and so on in a PHP based, object oriented project? ...
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vertical-align with Bootstrap 3

I'm using Twitter Bootstrap 3, and I have problems when I want to align vertically two div , for example — JSFiddle link : ...
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Android ViewPager - Show preview of page on left and right

I'm using Android's ViewPager . What I want to do is to show a preview of the page on both the left and the right. I've seen where I can use a negative pageMargin to show a preview of the right side. ...
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What is code coverage and how do YOU measure it?

What is code coverage and how do YOU measure it? 9 Answers 9 ...
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What is an existential type?

... type parameter. Second, invert control (this effectively swaps the "you" and "I" part in the definitions above, which is the primary difference between existentials and universals). // A wrapper that hides the type parameter 'B' interface VMWrapper { void unwrap(VMHandler handler); } // A cal...
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Git mergetool with Meld on Windows

In Linux, my favorite merge tool is Meld, and I've had no problems using or configuring it to work with Git. However, in Windows it has been a different story. ...
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How do I terminate a thread in C++11?

...to terminate the thread correctly, or make it respond to a "terminate" command. I am interested in terminating the thread forcefully using pure C++11. ...
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What is Castle Windsor, and why should I care?

I'm a long-time Windows developer, having cut my teeth on win32 and early COM. I've been working with .NET since 2001, so I'm pretty fluent in C# and the CLR. I'd never heard of Castle Windsor until I started participating in Stack Overflow. I've read the Castle Windsor "Getting Started" guide, b...