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Repeat Character N Times
...s out that according to this jsperf, it appears that it's faster in Safari and Chrome (but not Firefox) to repeat a character multiple times by simply appending using a for loop (although a bit less concise).
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Why does multiprocessing use only a single core after I import numpy?
...er here.
It turns out that certain Python modules (numpy, scipy, tables, pandas, skimage...) mess with core affinity on import. As far as I can tell, this problem seems to be specifically caused by them linking against multithreaded OpenBLAS libraries.
A workaround is to reset the task affinity us...
UPDATE multiple tables in MySQL using LEFT JOIN
I have two tables, and want to update fields in T1 for all rows in a LEFT JOIN.
5 Answers
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how to check redis instance version?
...urrently running version though. I had upgraded a server to 3.2.8 via yum, and this command showed the new version, but the server needed to be restarted manually to launch the new version, whereas INFO correctly reported the old version.
– X-Cubed
Apr 13 '17 a...
Get keys from HashMap in Java
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team1.put("foo", 1);
team1.put("bar", 2);
will store 1 with key "foo" and 2 with key "bar". To iterate over all the keys:
for ( String key : team1.keySet() ) {
System.out.println( key );
}
will print "foo" and "bar".
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Remove directory which is not empty
... Strange, I've never seen behavior like that. I'd suggest searching for and/or filing a bug. github.com/isaacs/rimraf/issues
– Morgan ARR Allen
May 2 '18 at 5:13
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Django - limiting query results
I want to take the last 10 instances of a model and have this code:
5 Answers
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Can I get CONST's defined on a PHP class?
I have several CONST's defined on some classes, and want to get a list of them. For example:
12 Answers
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How can I add the sqlite3 module to Python?
... module alongside the most recent version of Python?
I am using a Macbook, and on the command line, I tried:
4 Answers
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Converting java.util.Properties to HashMap
java.util.Properties is a implementation of java.util.Map , And java.util.HashMap's constructor receives a Map type param. So, why must it be converted explicitly?
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