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Ball to Ball Collision - Detection and Handling

... elastic collision between the balls, you only need to worry about the component of the velocity that is in the direction of the collision. The other component (tangent to the collision) will stay the same for both balls. You can get the collision components by creating a unit vector pointing in the...
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Multiple modals overlay

... After seeing many fixes for this, and none of them were exactly what I needed I've came up with a even shorter solution that is inspired by @YermoLamers & @Ketwaroo. Backdrop z-index fix This solution uses a setTimeout because the .modal-backdrop isn't create...
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Statistics: combinations in Python

... Why not write it yourself? It's a one-liner or such: from operator import mul # or mul=lambda x,y:x*y from fractions import Fraction def nCk(n,k): return int( reduce(mul, (Fraction(n-i, i+1) for i in range(k)), 1) ) Test - printing Pascal's triangle...
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Checking if a field contains a string

... You can do it with the following code. db.users.findOne({"username" : {$regex : ".*son.*"}}); share | improve this answer | follow | ...
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How to quickly and conveniently create a one element arraylist [duplicate]

... for example add elements to this List, it will throw an UnsupportedOperationException! – Adamsan Aug 28 '14 at 9:33 ...
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How to read the output from git diff?

...se). The --git is to mean that diff is in the "git" diff format. Next are one or more extended header lines. The first threesimilarity index 95% rename from builtin-http-fetch.c rename to http-fetch.ctell us that the file was renamed from builtin-http-fetch.c to http-fetch.c and that those two fil...
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Remove duplicate rows in MySQL

... The aforementioned bug @DarkMantis referred to and it's solution. – Jordan Arseno Jan 23 '13 at 20:47 ...
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How do I declare a 2d array in C++ using new?

... this in mind and be sure to delete this memory from the heap when you're done with it to prevent leaks. – Kekoa Jun 1 '09 at 20:51 85 ...
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Secondary axis with twinx(): how to add to legend?

...want to show them with legend() , but I only succeed to get the labels of one axis in the legend: 6 Answers ...
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Why doesn't await on Task.WhenAll throw an AggregateException?

...n. So, in catch block, you get the actual exception and not the aggregated one. This helps us write more natural and intuitive code. This was also needed for easier conversion of existing code into using async/await where the a lot of code expects specific exceptions and not aggregated exceptions. -...