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What does “coalgebra” mean in the context of programming?

...coalgebras" several times in functional programming and PLT circles, especially when the discussion is about objects, comonads, lenses, and such. Googling this term gives pages that give mathematical description of these structures which is pretty much incomprehensible to me. Can anyone please expla...
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How to write a Unit Test?

...input. Now, implement the test by declaring a class, name it anything (Usually something like TestAddingModule), and add the testAdd method to it (i.e. like the one below) : Write a method, and above it add the @Test annotation. In the method, run your binary sum and assertEquals(expectedVal,cal...
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What is the difference between 'typedef' and 'using' in C++11?

... All standard references below refers to N4659: March 2017 post-Kona working draft/C++17 DIS. Typedef declarations can, whereas alias declarations cannot, be used as initialization statements But, with the first two non-temp...
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Bash: infinite sleep (infinite blocking)

... "string" to a double. Then that double is truncated to the maximum values allowed timespec, which means a very large amount of seconds (architecture-dependant) but, in theory, finite. – jp48 Aug 19 '17 at 11:16 ...
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The forked VM terminated without saying properly goodbye. VM crash or System.exit called

... edited Aug 27 '18 at 7:30 s__ 6,51122 gold badges1717 silver badges4040 bronze badges answered Aug 27 '18 at 6:41 ...
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AngularJS - Trigger when radio button is selected

...d many ng-xxxx kind of options but couldn't find the one.. I just want to call some function in the controller when radio button is selected. ...
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✔ Checkmark selected row in UITableViewCell

... Update Swift 4 func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { tableView.cellForRow(at: indexPath)?.accessoryType = .checkmark } func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPat...
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Insert HTML with React Variable Statements (JSX)

... return ( <div className="content" dangerouslySetInnerHTML={{__html: thisIsMyCopy}}></div> ); } share | improve this answer | follow ...
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jQueryUI Tooltips are competing with Twitter Bootstrap

I have been able to get some tool tips to work finally with the following code: 10 Answers ...
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jQuery $(document).ready and UpdatePanels?

... $(document).ready(function() { // bind your jQuery events here initially }); var prm = Sys.WebForms.PageRequestManager.getInstance(); prm.add_endRequest(function() { // re-bind your jQuery events here }); The PageRequestManager is a javascript object which is automatically available i...