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What's HTML character code 8203?

What does the character code (HTML) ​ ? I found it in one of my jQuery scripts and wondered what it was.. 8 Answ...
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The apk must be signed with the same certificates as the previous version

I had uploaded my app to Google Play (back when it was called Android Market) some time ago. 11 Answers ...
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Removing an activity from the history stack

My app shows a signup activity the first time the user runs the app, looks like: 15 Answers ...
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Inner join vs Where

Is there a difference in performance (in oracle) between 19 Answers 19 ...
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Can I use if (pointer) instead of if (pointer != NULL)?

Is it safe to check a pointer to not being NULL by writing simply if(pointer) or do I have to use if(pointer != NULL) ? ...
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Most common C# bitwise operations on enums

For the life of me, I can't remember how to set, delete, toggle or test a bit in a bitfield. Either I'm unsure or I mix them up because I rarely need these. So a "bit-cheat-sheet" would be nice to have. ...
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Obstructed folders in Subversion

What the heck does "obstructed" mean when you try to check into Subversion? I see two folders in red with text status of "obstructed." I don't see what this means anywhere in the docs. ...
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Easy way to turn JavaScript array into comma-separated list?

I have a one-dimensional array of strings in JavaScript that I'd like to turn into a comma-separated list. Is there a simple way in garden-variety JavaScript (or jQuery) to turn that into a comma-separated list? (I know how to iterate through the array and build the string myself by concatenation if...
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How to use the “number_to_currency” helper method in the model rather than view?

I would like to use to_dollar method in my model like this: 11 Answers 11 ...
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byte[] to hex string [duplicate]

How do I convert a byte[] to a string ? Every time I attempt it, I get 19 Answers ...