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Python group by
...ume that I have a set of data pair where index 0 is the value and index 1 is the type:
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How to check if mysql database exists
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How do I list one filename per output line in Linux?
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Use the -1 option (note this is a "one" digit, not a lowercase letter "L"), like this:
ls -1a
First, though, make sure your ls supports -1. GNU coreutils (installed on standard Linux systems) and Solaris do; but if in doubt, use...
Show a number to two decimal places
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You can use number_format():
return number_format((float)$number, 2, '.', '');
Example:
$...
How do I put double quotes in a string in vba?
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I find the easiest way is to double up on the quotes to handle a quote.
Worksheets("Sheet1")....
Using querySelector with IDs that are numbers
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It is valid, but requires some special handling. From here: http://mathiasbynens.be/notes/css...
How do I execute a Git command without being in the repository?
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Try:
git --git-dir=/home/repo/.git log
It is important to give the path all the way up to t...
Can clearInterval() be called inside setInterval()?
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