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Clearing purchases from iOS in-app purchase sandbox for a test user

Does anyone have any ideas on how to reset and/or clear the iOS in-app purchase sandbox? 8 Answers ...
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DTO = ViewModel?

...ngs simple I'm using an ASP.NET MVC project as both my presentation layer, and my service layer. 8 Answers ...
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Window.open and pass parameters by post method

...rect, with encoding of values in the HTML code), just open an empty window and post a form to it. Example: <form id="TheForm" method="post" action="test.asp" target="TheWindow"> <input type="hidden" name="something" value="something" /> <input type="hidden" name="more" value="someth...
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Is the pImpl idiom really used in practice?

I am reading the book "Exceptional C++" by Herb Sutter, and in that book I have learned about the pImpl idiom. Basically, the idea is to create a structure for the private objects of a class and dynamically allocate them to decrease the compilation time (and also hide the private implementatio...
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if A vs if A is not None:

...if A: will call A.__nonzero__() (see Special method names documentation) and use the return value of that function. Here's the summary: object.__nonzero__(self) Called to implement truth value testing and the built-in operation bool(); should return False or True, or their integer equival...
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Is “Java Concurrency In Practice” still valid? [closed]

...rency in Practice still valid? I am wondering whether the ideas, concepts and implementation described in the book are still compliant with the latest Java versions. ...
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Entity Framework - Invalid Column Name '*_ID"

I've narrowed this down to some issue between Code First and Database first EF, but I'm not sure how to fix it. I'll try to be as clear as I can, but I honestly am missing some of the understanding here myself. This is Entity Framework 4.4 ...
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How do SQL EXISTS statements work?

I'm trying to learn SQL and am having a hard time understanding EXISTS statements. I came across this quote about "exists" and don't understand something: ...
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When to use in vs ref vs out

...use the parameter keyword out instead of ref . While I (I think) understand the difference between the ref and out keywords (that has been asked before ) and the best explanation seems to be that ref == in and out , what are some (hypothetical or code) examples where I should always use...
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Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied

How to I get mongo to use a mounted drive on ec2? I really do not understand. I attached a volume on ec2 formatted the drive as root and start as root and yet as root I cant access? I am running on ubuntu 12.04. No other mongo is running ...