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How to concatenate text from multiple rows into a single text string in SQL server?
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How to create a MySQL hierarchical recursive query
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For MySQL 8+: use the recursive with syntax.
For MySQL 5.x: use inline variables, path IDs, or ...
How to get the focused element with jQuery?
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// Get the focused element:
var $focused = $(':focus');
// No jQuery:
var focused = document.ac...
Twitter Bootstrap - add top space between rows
...er" that adds the standard margin that you need.
.top-buffer { margin-top:20px; }
And then use it on the row divs where you need a top margin.
<div class="row top-buffer"> ...
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Argument list too long error for rm, cp, mv commands
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27 Answers
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How to find Unused Amazon EC2 Security groups
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Note: this only considers security use in EC2, not other services like RDS. You'll need to do more work to include security groups used outside EC2. The good thing is you can't easily (might not even be possible) to delete active security groups if you miss one asso...
How can I catch all the exceptions that will be thrown through reading and writing a file?
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edited Jul 2 '09 at 18:35
answered Jul 2 '09 at 18:20
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Make copy of an array
I have an array a which is constantly being updated. Let's say a = [1,2,3,4,5] . I need to make an exact duplicate copy of a and call it b . If a were to change to [6,7,8,9,10] , b should still be [1,2,3,4,5] . What is the best way to do this? I tried a for loop like:
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