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MySQL: how to get the difference between two timestamps in seconds
Is there a way I can make a query in MySQL that will give me the difference between two timestamps in seconds, or would I need to do that in PHP? And if so, how would I go about doing that?
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Why not be dependently typed?
...s really just the unification of the value and type levels, so you can parametrize values on types (already possible with type classes and parametric polymorphism in Haskell) and you can parametrize types on values (not, strictly speaking, possible yet in Haskell, although DataKinds gets very close)...
How do I run a node.js app as a background service?
... application as its own process?
2015 answer: nearly every Linux distro comes with systemd, which means forever, monit, PM2, etc are no longer necessary - your OS already handles these tasks.
Make a myapp.service file (replacing 'myapp' with your app's name, obviously):
[Unit]
Description=My app...
pull/push from multiple remote locations
...etch from all the configured remotes and update tracking branches, but not merge into HEAD, do:
git remote update
If it's not currently connected to one of the remotes, it will take time out or throw an error, and go on to the next. You'll have to manually merge from the fetched repositories, or ...
Best way to alphanumeric check in JavaScript
What is the best way to perform an alphanumeric check on an INPUT field in JSP ? I have attached my current code
10 Answ...
How to clear APC cache entries?
... completely separate process from Apache.
– Frank Farmer
May 26 '09 at 18:59
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Frank Farmer: I co...
How to store a command in a variable in a shell script?
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$(...) is now recommended instead of backticks. y=$(eval $x) mywiki.wooledge.org/BashFAQ/082
– James Broadhead
Mar 11 '12 at 20:35
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How do you format the day of the month to say “11th”, “21st” or “23rd” (ordinal indicator)?
I know this will give me the day of the month as a number ( 11 , 21 , 23 ):
19 Answers
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How to set environment variables in Python?
I need to set some environment variables in the Python script and I want all the other scripts that are called from Python to see the environment variables' set.
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Random row from Linq to Sql
...to retrieve a random row using Linq to SQL when I have a condition, e.g. some field must be true?
15 Answers
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