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How to create a file in memory for user to download, but not through server?

Is there any way I can create a text file on the client side and prompt the user to download it, without any interaction with the server? I know I can't write directly to their machine (security and all), but can I create and prompt them to save it? ...
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Further understanding setRetainInstance(true)

...stance(true) on a Fragment ? The documentation is virtually non-existent and this seems like a very important function. Specifically I want to know how much of this sequence (that I made up) is true: ...
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Easy way to dismiss keyboard?

...ve quite a few controls scattered throughout many table cells in my table, and I was wondering if there's an easier way to dismiss the keyboard without having to loop through all my controls and resigning them all as the first responder. I guess the question is.. How would I get the current first re...
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Are there good reasons not to use an ORM? [closed]

...p, I have used NHibernate for some smaller projects which I mostly coded and designed on my own. Now, before starting some bigger project, the discussion arose how to design data access and whether or not to use an ORM layer. As I am still in my apprenticeship and still consider myself a beginner ...
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What does the ??!??! operator do in C?

...?! is a trigraph that translates to |. So it says: !ErrorHasOccured() || HandleError(); which, due to short circuiting, is equivalent to: if (ErrorHasOccured()) HandleError(); Guru of the Week (deals with C++ but relevant here), where I picked this up. Possible origin of trigraphs or as @...
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problem with and :after with CSS in WebKit

...n a select box with the pseudo :after (to style my select box with 2 parts and without images). Here's the HTML: 9 Answers ...
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Is SHA-1 secure for password storage?

...t to 160 or 128 bits (to save on storage cost). Some of the SHA-3 round-2 candidates appear to be faster than SHA-1 while being arguably "more secure"; yet they are still a bit new, so sticking to SHA-256 or SHA-512 would be a safer route right now. It would make you look professional and cautious, ...
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Move the mouse pointer to a specific position?

I'm building a HTML5 game and I am trying to put the mouse cursor over a certain control on a specific event so that moving in a specific direction always has the same result. Is this possible? ...
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Why can't my program compile under Windows 7 in French? [closed]

I'm running Windows 7 French and I'm trying to compile this really basic program, but Visual Studio is being stubborn and refuses to comply. I also tried compiling it with both GCC 4.7 and Clang trunk on Coliru and I get more or less the same errors (output is below the code), though I think Colir...
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How to run a Runnable thread in Android at defined intervals?

... developed an application to display some text at defined intervals in the Android emulator screen. I am using the Handler class. Here is a snippet from my code: ...