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Why are my balls disappearing? [closed]

Pardon the funny title. I've created a little graphic demo of 200 balls bouncing and colliding, both against the walls and each other. You can see what I have currently here: http://www.exeneva.com/html5/multipleBallsBouncingAndColliding/ ...
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Cannot use Server.MapPath

... First of all your project needs to reference System.Web.dll and it will work – ihebiheb Jul 12 '16 at 14:38 ...
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How to change the icon of an Android app in Eclipse?

...abelled: "Create New Icon..." Create your icon Click Finish Click "Yes to All" if you already have the icon set to something else. Enjoy using a gui rather then messing with an image editor! Hope this helps! share ...
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Should I use “hasClass” before “addClass”? [duplicate]

...able as well.. (click on line number and shift+click on another to select all lines..) – Gabriele Petrioli Nov 13 '12 at 10:30 ...
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Responsive web design is working on desktop but not on mobile device

... make sure the production index.html actually includes the tag as well as development index.html – halafi Mar 4 '18 at 9:56 ...
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Bootstrap Responsive Text Size [duplicate]

... body{font-size: 14px;} } h5{ font-size: 1.4rem; } Look at all the ways at https://stackoverflow.com/a/21981859/406659 You could use viewport units (vh,vw...) but they dont work on Android < 4.4 share ...
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Is there a way to “limit” the result with ELOQUENT ORM of Laravel?

... This is seriously amazing! Using bootstrap, literally all the code you need is $games = Game::paginate(30) in your controller and {{ $games->links() }} in your view... it takes care of everything. Loving Laravel! – david_nash Feb 8 ...
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Remove final character from string [duplicate]

... Actually that slice will still work even if st is empty. Well, it will return an empty string still, but you won't get an error. – kindall Mar 18 '13 at 13:58 ...
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Testing for empty or nil-value string [duplicate]

I'm trying to set a variable conditionally in Ruby. I need to set it if the variable is nil or empty (0 length string). I've come up with the following: ...
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What is define([ , function ]) in JavaScript? [duplicate]

I see this being used all the time in JavaScript: 2 Answers 2 ...