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How to call a parent class function from derived class function?

...disambiguate it by adding the base class's name followed by two colons base_class::foo(...). You should note that unlike Java and C#, C++ does not have a keyword for "the base class" (super or base) since C++ supports multiple inheritance which may lead to ambiguity. class left { public: void f...
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Convert UTC date time to local date time

...ght local time which in my case would be two hours later (DK time). You really don't have to do all this parsing which just complicates stuff, as long as you are consistent with what format to expect from the server. share ...
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Download data url file

... just drag their zip directly into the browser and it'll let them download all the files within. They can also create new zip files by dragging individual files in. ...
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C# : 'is' keyword and checking for Not

This is a silly question, but you can use this code to check if something is a particular type... 12 Answers ...
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How to get a random number in Ruby

...6). A roll in craps could be simulated with 2 + rand(6) + rand(6). Finally, if you just need a random float, just call rand with no arguments. As Marc-André Lafortune mentions in his answer below (go upvote it), Ruby 1.9.2 has its own Random class (that Marc-André himself helped to debug,...
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Run a string as a command within a Bash script

... eval is an evil command in all programming languages so use it with caution. – Krishnadas PC Jul 17 '18 at 6:50 1 ...
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How to parse JSON in Scala using standard Scala classes?

... { "languages": [{ "name": "English", "is_active": true, "completeness": 2.5 }, { "name": "Latin", "is_active": false, "completeness": 0.9 }] } """.stripMargin val result = for { Some(M(m...
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Getting the last revision number in SVN?

Using PHP, Perl, or Python (preferably PHP), I need a way to query an SVN database and find out the last revision number sent to SVN. I don't need anything other than that. It needs to be non-intensive (so I do it every 5 minutes as a cron job; SVN's performance should not be affected). ...
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App Inventor 2 NFC应用教程 - 读取NFC标签与门禁卡 · App Inventor 2 中文网

...索 App Inventor 2 NFC应用教程 - 读取NFC标签与门禁卡 概述 ⚠️ 重要限制 NFC组件 组件位置 添加NFC扩展 读取NFC标签 ...
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“Eliminate render-blocking CSS in above-the-fold content”

...n of jQuery's .ready() to defer scripts until the page had loaded fully, all I had to do was inline that particular function and move the full scripts to the end of the page. That worked great. ...