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Programmatically align a toolbar on top of the iPhone keyboard

... As of iOS 3.2 there's a new way to achieve this effect: UITextFields and UITextViews have an inputAccessoryView property, which you can set to any view, that is automatically displayed above and animated with the keyboard. Note that the view you use should neither be in the view hierarchy els...
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Asynchronous vs Multithreading - Is there a difference?

...s being other ways. It depends heavily on language, object model (if any), and run time environment. Asynchronous just means the calling thread doesn't sit and wait for the response, nor does the asynchronous activity happen in the calling thread. Beyond that, you're going to need to get more spec...
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Why is AJAX returning HTTP status code 0?

...with my dashcode developed application) the browser just stops uploading and returns status codes of 0 . Why does this happen? ...
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Looping in a spiral

...algorithm that would let him loop through the elements of an NxM matrix (N and M are odd). I came up with a solution, but I wanted to see if my fellow SO'ers could come up with a better solution. ...
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How to subtract X days from a date using Java calendar?

... You would not use Calendar.DAY_OF_MONTH in this case since it will not handle the roll between months as you would like to. Use Calendar.DAY_OF_YEAR instead – algorithms Sep 20 '14 at 11:39 ...
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Why do python lists have pop() but not push()

...ot called list.push given that there's already a list.pop that removes and returns the last element (that indexed at -1) and list.append semantic is consistent with that use? ...
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How to pass “Null” (a real surname!) to a SOAP web service in ActionScript 3

...I thought this was a coercion bug where null was getting coerced to "null" and a test of "null" == null was passing. It's not. I was close, but so very, very wrong. Sorry about that! I've since done lots of fiddling on wonderfl.net and tracing through the code in mx.rpc.xml.*. At line 1795 of XMLEn...
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What's the advantage of a Java enum versus a class with public static final fields?

... C#, such as the ability to easily assign an enum element a certain value, and consequently the ability to convert an integer to an enum without a decent amount of effort (i.e. Convert integer value to matching Java Enum ). ...
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“Parse Error : There is a problem parsing the package” while installing Android application

I got this error while installing the android application ( Parse Error : There is a problem parsing the package. ). I did the following steps. ...
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Evaluating a mathematical expression in a string

...ppend(toks[0]) def pushUMinus(self, strg, loc, toks): if toks and toks[0] == '-': self.exprStack.append('unary -') def __init__(self): """ expop :: '^' multop :: '*' | '/' addop :: '+' | '-' integer :: ['+' | '-'] '0'..'9'+ ...