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MySQL maximum memory usage
...mize its behavior. If you run into issues, you really need to sit down and read the (f'ing) manual.
As for the database -- a few important constraints:
table engine (InnoDB, MyISAM, ...)
size
indices
usage
Most MySQL tips on stackoverflow will tell you about 5-8 so called important settings. Fi...
Getting root permissions on a file inside of vi? [closed]
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Common Caveats
The most common method of getting around the read-only file problem is to open a pipe to current file as the super-user using an implementation of sudo tee. However, all of the most popular solutions that I have found around the Internet have a combination of a several...
Real world example about how to use property feature in python?
I am interested in how to use @property in Python. I've read the python docs and the example there, in my opinion, is just a toy code:
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Immutable class?
... It is difficult to maintain correctness in mutable objects, as multiple threads could be trying to change the state of the same object, leading to some threads seeing a different state of the same object, depending on the timing of the reads and writes to the said object.
By having an immutable ob...
How can I check the syntax of Python script without executing it?
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import sys
filename = sys.argv[1]
source = open(filename, 'r').read() + '\n'
compile(source, filename, 'exec')
Save this as checker.py and run python checker.py yourpyfile.py.
share
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How to fix Error: listen EADDRINUSE while using nodejs?
...means that the port number which listen() tries to bind the server to is already in use.
So, in your case, there must be running a server on port 80 already.
If you have another webserver running on this port you have to put node.js behind that server and proxy it through it.
You should check for...
How to remove all null elements from a ArrayList or String Array?
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Try:
tourists.removeAll(Collections.singleton(null));
Read the Java API. The code will throw java.lang.UnsupportedOperationException for immutable lists (such as created with Arrays.asList); see this answer for more details.
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How do I use the nohup command without getting nohup.out?
... of nohup.out, it avoids another problem: if a background process tries to read anything from standard input, it will pause, waiting for you to bring it back to the foreground and type something. So the extra-safe version looks like this:
nohup command </dev/null >/dev/null 2>&1 & ...
MongoDB - admin user not authorized
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roles: [ { role: 'root', db: 'admin' } ]
}
);
exit;
If you have already created the admin user, you can change the role like this:
use admin;
db.grantRolesToUser('admin', [{ role: 'root', db: 'admin' }])
For a complete authentication setting reference, see the steps I've compiled after h...
_csv.Error: field larger than field limit (131072)
I have a script reading in a csv file with very huge fields:
8 Answers
8
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