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How to set JAVA_HOME in Linux for all users

... For all users, I would recommend placing the following line in /etc/profile export JAVA_HOME=$(readlink -f /usr/bin/javac | sed "s:/bin/javac::") This will update dynamically and works well with the alternatives system. Do not...
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rails i18n - translating text with links inside

... en.yml log_in_message_html: "This is a text, with a %{href} inside." log_in_href: "link" login.html.erb <p> <%= t("log_in_message_html", href: link_to(t("log_in_href"), login_path)) %> </p> ...
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How do I integrate Ajax with Django applications?

...ction, going to 127.0.0.1:8000/home will return the index.html and replace all the variables as asked (you probably know all this by now). Now let's talk about AJAX. AJAX calls are client-side code that does asynchronous requests. That sounds complicated, but it simply means it does a request for y...
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Mimicking sets in JavaScript?

...the list is a little safer with this: if (Object.prototype.hasOwnProperty.call(obj, A)) // put code here } because of potential conflict between built-in methods and/or properties on the base Object like the constructor property. Sidebar on ES6: The current working version of ECMAScript 6 or s...
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Which letter of the English alphabet takes up most pixels?

...n 'Arial Black' on my MacBook in Chrome, lowercase m is the widest, by a small margin. – Earl Jenkins Feb 14 '12 at 22:25 15 ...
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App Inventor 2 上传文件到服务器的方案全总结 - App Inventor 2 中文网 - ...

...Program...";//phpinfo(); $picDir = "./test/"; $fileName = $_REQUEST['pic']; $startT = microtime(TRUE); echo "\nReceiving: $fileName \n"; $dataToWrite = file_get_contents('php://input'); $fileStatus = file_put_contents($picDir.$fileName, $dataToWrite); $dur = microtime(TR...
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How do you create a static class in C++?

...int buffer, int bitIndex); // ...lots of great stuff private: // Disallow creating an instance of this object BitParser() {} }; BitParser.cpp bool BitParser::getBitAt(int buffer, int bitIndex) { bool isBitSet = false; // .. determine if bit is set return isBitSet; } You can use t...
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How can I force users to access my page over HTTPS instead of HTTP?

... The way I've done it before is basically like what you wrote, but doesn't have any hardcoded values: if($_SERVER["HTTPS"] != "on") { header("Location: https://" . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]); exit(); } ...
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Tool to read and display Java .class versions

...ead the class file signature and get these values without a 3rd party API. All you need to do is read the first 8 bytes. ClassFile { u4 magic; u2 minor_version; u2 major_version; For class file version 51.0 (Java 7), the opening bytes are: CA FE BA BE 00 00 00 33 ...where 0xCAFEBAB...
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How do I expand the output display to see more columns of a pandas DataFrame?

...: None] [currently: None] : float or None if set to a float value, all float values smaller then the given threshold will be displayed as exactly 0 by repr and friends. display.colheader_justify: [default: right] [currently: right] : 'left'/'right' Controls the justification ...