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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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Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=

...: SET @rUsername = ‘aname’ COLLATE utf8_unicode_ci; -- COLLATE added CALL updateProductUsers(@rUsername, @rProductID, @rPerm); Option 2: add COLLATE to the WHERE clause: CREATE PROCEDURE updateProductUsers( IN rUsername VARCHAR(24), IN rProductID INT UNSIGNED, IN rPerm VARCHAR(16...
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Concurrent HashSet in .NET Framework?

...ass. private ConcurrentBag<string> _data; Self-implementation Finally, as you did, you can implement your own data type, using lock or other ways that the .NET provides you to be thread-safe. Here is a great example: How to implement ConcurrentHashSet in .Net The only drawback of this sol...
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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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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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Extract month and year from a zoo::yearmon object

... Ha thank you for this answer. It especially beats the other solutions when you want to do something like if(year(date1) > 2014){year(date1) <- year(date1) - 100} – Vincent Feb 10 '14 at 9:34 ...
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How to determine a Python variable's type?

... It is so simple. You do it like this. print(type(variable_name)) share | improve this answer | follow | ...
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Unexpected results when working with very big integers on interpreted languages

...em will work in this case, since Python switches to long integers automatically if needed. And if that's not enough, it will switch to big integers as well. – Alok Singhal Aug 4 '13 at 19:37 ...
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Force IE compatibility mode off using tags

I am doing work for a client who forces compatibility mode on all intranet sites. I was wondering if there is a tag I can put into my HTML that forces compatibility mode off. ...
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powershell 2.0 try catch how to access the exception

...tch [Net.WebException] { $_ | fl * -Force } I think it will give you all the info you need. My rule: if there is some data that is not displayed, try to use -force. share | improve this answe...