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MySQL: Invalid use of group function
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175
You need to use HAVING, not WHERE.
The difference is: the WHERE clause filters which rows MyS...
Highlight label if checkbox is checked
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147
If you have
<div>
<input type="checkbox" class="check-with-label" id="idinput" /&g...
Select multiple records based on list of Id's with linq
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214
You can use Contains() for that. It will feel a little backwards when you're really trying to ...
Getting error: Peer authentication failed for user “postgres”, when trying to get pgsql working with
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21 Answers
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How to get and set the current web page scroll position?
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119
You're looking for the document.documentElement.scrollTop property.
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Rails: Check output of path helper from console
...le, you can call app.post_path. This will work in Rails ~= 2.3 and >= 3.1.0.
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Detect & Record Audio in Python
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106
As a follow up to Nick Fortescue's answer, here's a more complete example of how to record fro...
In Python, how do I read the exif data for an image?
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185
You can use the _getexif() protected method of a PIL Image.
import PIL.Image
img = PIL.Image.o...
How to get the start time of a long-running Linux process?
...,lstart,cmd
PID CMD STARTED
1 Tue Jun 7 01:29:38 2016 /sbin/init
2 Tue Jun 7 01:29:38 2016 [kthreadd]
3 Tue Jun 7 01:29:38 2016 [ksoftirqd/0]
5 Tue Jun 7 01:29:38 2016 [kworker/0:0H] ...
Why does C++ rand() seem to generate only numbers of the same order of magnitude?
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There are only 3% of numbers between 1 and 230 which are NOT between 225 and 230. So, this sounds pretty normal :)
Because 225 / 230 = 2-5 = 1/32 = 0.03125 = 3.125%
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