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Why do we need a pure virtual destructor in C++?

...ly method that even if it is pure virtual has to have an implementation in order to instantiate derived classes (yes pure virtual functions can have implementations). struct foo { virtual void bar() = 0; }; void foo::bar() { /* default implementation */ } class foof : public foo { void ba...
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Making your .NET language step correctly in the debugger

... Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity. ...
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How to get base url with jquery or javascript?

In joomla php there I can use $this->baseurl to get the base path, but I wanted to get the base path in jquery. 24 Ans...
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How do I get a UTC Timestamp in JavaScript?

...should do the Math.floor / 1000 -- but still I would need that function in order to have the UTC timestamp of an existing date object... right? – Merc Mar 18 '12 at 5:22 ...
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How do you use variables in a simple PostgreSQL script?

... Took me a while to figure out that in order to use the variable you must not prefix it with a : as with other variables. @achilles-ram-nakirekanti you could add an example using this in a select statement to make this clearer? – exhuma ...
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Perform debounce in React.js

...lerplate and concurrency issues due to API calls resolving in an arbitrary order. I've created a little library with React in mind to solve your pains: awesome-debounce-promise. This should not be more complicated than that: const searchAPI = text => fetch('/search?text=' + encodeURIComponent(...
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How can I count occurrences with groupBy?

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How do you serve a file for download with AngularJS or Javascript?

...scope.url = (window.URL || window.webkitURL).createObjectURL( blob ); in order to enable the URL: app = angular.module(...); app.config(['$compileProvider', function ($compileProvider) { $compileProvider.aHrefSanitizationWhitelist(/^\s*(https?|ftp|mailto|tel|file|blob):/); }]); Plea...
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SQL query to get all values a enum can have

... If enumeration order is important, append ORDER BY e.enumsortorder to the query. The enumerated values will most likely be out of order if new values were inserted into the enumeration type using BEFORE or AFTER. – Cli...
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Can an html element have multiple ids?

...erefore, in XHTML 1.0 the id attribute is defined to be of type ID. In order to ensure that XHTML 1.0 documents are well-structured XML documents, XHTML 1.0 documents MUST use the id attribute when defining fragment identifiers on the elements listed above. See the HTML Compatibility...