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Draw a perfect circle from user's touch

I have this practice project that allows the user to draw on the screen as they touch with their fingers. Very simple App I did as exercise way back. My little cousin took the liberty of drawing things with his finger with my iPad on this App (Kids drawings: circle, lines, etc, whatever came to his ...
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nginx: send all requests to a single html page

Using nginx, I want to preserve the url, but actually load the same page no matter what. I will use the url with History.getState() to route the requests in my javascript app. It seems like it should be a simple thing to do? ...
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C# how to create a Guid value?

...uid(); Hey, its a 'valid', although not very useful, Guid. (the guid is all zeros, if you don't know. Sometimes this is needed to indicate no guid, in cases where you don't want to use a nullable Guid) share | ...
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jQuery selectors on custom data attributes using HTML5

... $("ul[data-group='Companies'] li[data-company='Microsoft']") //Get all elements with data-company="Microsoft" below "Companies" $("ul[data-group='Companies'] li:not([data-company='Microsoft'])") //get all elements with data-company!="Microsoft" below "Companies" Look in to jQuery Selector...
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The static keyword and its various uses in C++

...that I find very confusing and I can never bend my mind around how its actually supposed to work. 9 Answers ...
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In git, is there a way to show untracked stashed files without applying the stash?

...an stash untracked files. However, said untracked files don't show up at all with git stash show stash@{0} . Is there any way to show untracked stashed files without applying the stash? ...
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Clear back stack using fragments

...tBackStackEntryCount(); ++i) { fm.popBackStack(); } But could equally have used something like: ((AppCompatActivity)getContext()).getSupportFragmentManager().popBackStack(String name, FragmentManager.POP_BACK_STACK_INCLUSIVE) Which will pop all states up to the named one. You can then j...
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Wildcards in a Windows hosts file

...idea is that as I develop multiple sites, I can just add vhosts to Apache called site1.local , site2.local etc, and have them all resolve to localhost , while Apache serves a different site accordingly. ...
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Updating packages in Emacs

... In order to automatically update the list of packages, only if there is no package list already, use the following: (when (not package-archive-contents) (package-refresh-contents)) In order to update all installed packages, type package-li...
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Center a position:fixed element

...in: 5% auto; for this. Without position: fixed; it centers fine horizontally, but not vertically. After adding position: fixed; , it's even not centering horizontally. ...