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How can I start PostgreSQL server on Mac OS X?
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The Homebrew package manager includes launchctl plists to start automatically. For more information, run brew info postgres.
Start manually
pg_ctl -D /usr/local/var/postgres start
Stop manually
pg_ctl -D /usr/local/var/postgres stop
Start automatically
"To have launchd start postgre...
What is the difference between String.slice and String.substring?
...rks like substring() with a few different behaviors.
Syntax: string.slice(start, stop);
Syntax: string.substring(start, stop);
What they have in common:
If start equals stop: returns an empty string
If stop is omitted: extracts characters to the end of the string
If either argument is greater t...
Is it possible to specify a starting number for an ordered list?
...ted) in HTML 4.01. In this specification they say that you can specify the starting integer by using CSS. (instead of the start attribute)
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Iterating through a range of dates in Python
...an I do it better? Right now I think it's better than nested loops, but it starts to get Perl-one-linerish when you have a generator in a list comprehension.
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How to continue a Docker container which has exited
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You can restart an existing container after it exited and your changes are still there.
docker start `docker ps -q -l` # restart it in the background
docker attach `docker ps -q -l` # reattach the terminal & stdin
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How to tell PowerShell to wait for each command to end before starting the next?
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Normally, for internal commands PowerShell does wait before starting the next command. One exception to this rule is external Windows subsystem based EXE. The first trick is to pipeline to Out-Null like so:
Notepad.exe | Out-Null
PowerShell will wait until the Notepad.exe process...
Running Windows batch file commands asynchronously
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Using the START command to run each program should get you what you need:
START "title" [/D path] [options] "command" [parameters]
Every START invocation runs the command given in its parameter and returns immediately, unless execut...
What's the difference between Thread start() and Runnable run()
...Thread(r2);
t1 and t2 are objects of the class Thread. When you call t1.start(), it starts a new thread and calls the run() method of r1 internally to execute it within that new thread.
share
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Python threading.timer - repeat function every 'n' seconds
I want to fire off a function every 0.5 seconds and be able to start and stop and reset the timer. I'm not too knowledgeable of how Python threads work and am having difficulties with the python timer.
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Is there a generator version of `string.split()` in Python?
...if not hasattr(sep, "finditer"):
sep = re.compile(sep)
start = 0
for m in sep.finditer(source):
idx = m.start()
assert idx >= start
yield source[start:idx]
start = m.end()
yield source[start:]
else:
# ...