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Is having an 'OR' in an INNER JOIN condition a bad idea?
In trying to improve the speed of an immensely slow query (several minutes on two tables with only ~50,000 rows each, on SQL Server 2008 if it matters), I narrowed down the problem to an OR in my inner join, as in:
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What generates the “text file busy” message in Unix?
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This error means some other process or user is accessing your file. Use lsof to check what other processes are using it. You can use kill command to kill it if needed.
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Using PHP with Socket.io
...or not, this is not the point.
The solution is : I haven't found any implementation of socket.io for PHP.
But there are some ways to implement WebSockets. There is this jQuery plugin allowing you to use Websockets while gracefully degrading for non-supporting browsers. On the PHP side, there is th...
jQuery: Adding two attributes via the .attr(); method
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Note:
" When setting multiple attributes, the quotes around attribute names are optional.
WARNING: When setting the 'class' attribute, you must always use quotes!
From the jQuery documentation (Sep 2016) for .attr:
Attempting to change the type attribute on an input or button element created vi...
Unusual shape of a textarea?
...ber of browsers, because it doesn't need any CSS3 properties. However, the method will not work on browsers which doesn't support contentdeditable, be careful.
Solution with a div contenteditable
As proposed by @Getz, you can use a div with contenteditable and then shape it with some div on it. He...
How to show SQL queries run in the Rails console?
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Perfect, just what I needed. Have any recommendation where to go find small tricks such as these are documented?
– randombits
May 29 '10 at 18:18
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How to check for Is not Null And Is not Empty string in SQL server?
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Delete last commit in bitbucket
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In the first place, if you are working with other people on the same code repository, you should not delete a commit since when you force the update on the repository it will leave the local repositories of your coworkers in an illegal state (e.g. if they made commits after the one you dele...
How to write an async method with out parameter?
I want to write an async method with an out parameter, like this:
11 Answers
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Java unchecked: unchecked generic array creation for varargs parameter
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As janoh.janoh mentioned above, varargs in Java is just a syntactic sugar for arrays plus the implicit creation of an array at the calling site. So
List<List<String>> combinations =
Utils.createCombinations(cocNumbers, vatN...