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Draw in Canvas by finger, Android

...ur onDraw() you draw the paths using the paint of your choice. You should call invalidate() to refresh the view. To choose options you can click menu and choose the options. The below can be used as a reference. You can modify the below according to your needs. public class FingerPaintActivity ex...
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AngularJS ng-click stopPropagation

... ngClick directive (as well as all other event directives) creates $event variable which is available on same scope. This variable is a reference to JS event object and can be used to call stopPropagation(): <table> <tr ng-repeat="user in users...
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There is no ViewData item of type 'IEnumerable' that has the key 'xxx'

...ntains a SelectList with the same name as your DropDownList i.e. "submarket_0", the Html helper will automatically populate your DropDownList with that data if you don't specify the 2nd parameter which in this case is the source SelectList. What happened with my error was: Because the table contai...
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What is the difference between `sorted(list)` vs `list.sort()`?

...sorts the list in-place, mutating the list indices, and returns None (like all in-place operations). sorted() works on any iterable, not just lists. Strings, tuples, dictionaries (you'll get the keys), generators, etc., returning a list containing all elements, sorted. Use list.sort() when you wa...
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What is Haskell used for in the real world? [closed]

... to be able to easily roll back every change if some object deep in the call hierarchy decided the message is flawed? How about having a history of different states? Many housekeeping tasks made for you: deconstructing data structures (PatternMatching), storing variable bindings (LexicalScop...
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fatal error: malformed or corrupted AST file - Xcode

... Thanks man, this worked. But can you please explain what is all this about_ I like to know why something happens, when it does. And I just had this error when I opened my project the next day, out of the blue. – SteBra Jul 23 '14 at 8:27 ...
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Eclipse: How do i refresh an entire workspace? F5 doesn't do it

...with a bunch of java projects. If I go to File->Refresh , it doesn't really refresh anything (perhaps the currently selected project). How do I get eclipse to refresh all of the projects? ...
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From inside of a Docker container, how do I connect to the localhost of the machine?

...as described in qoomon's answer. 2020-01: some progress has been made. If all goes well, this should land in Docker 20.04 TLDR Use --network="host" in your docker run command, then 127.0.0.1 in your docker container will point to your docker host. Note: This mode only works on Docker for Linux...
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How can I determine whether a 2D Point is within a Polygon?

...integers. Many systems use integers for UI painting (pixels are ints after all), but macOS for example uses float for everything. macOS only knows points and a point can translate to one pixel, but depending on monitor resolution, it might translate to something else. On retina screens half a point ...
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Random alpha-numeric string in JavaScript? [duplicate]

...'0123456789'; if (chars.indexOf('!') > -1) mask += '~`!@#$%^&*()_+-={}[]:";\'<>?,./|\\'; var result = ''; for (var i = length; i > 0; --i) result += mask[Math.floor(Math.random() * mask.length)]; return result; } console.log(randomString(16, 'aA')); console.log(rando...