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virtualenvwrapper and Python 3
...
virtualenvwrapper now lets you specify the python executable without the path.
So (on OSX at least)mkvirtualenv --python=python3 nameOfEnvironment will suffice.
share...
How to check if a process id (PID) exists
...s -p $PID > /dev/null
then
echo "$PID is running"
# Do something knowing the pid exists, i.e. the process with $PID is running
fi
The problem with:
kill -0 $PID
is the exit code will be non-zero even if the pid is running and you dont have permission to kill it. For example:
kill -0 1...
Cookie overflow in rails application?
I have this error when I try to open the page. I do not know how to debug this error. Do you have any suggestion for this problem?
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Numpy argsort - what is it doing?
...ing a list of values as
listExample = [0 , 2, 2456, 2000, 5000, 0, 1]
Now we use argsort function:
import numpy as np
list(np.argsort(listExample))
The output will be
[0, 5, 6, 1, 3, 2, 4]
This is the list of indices of values in listExample if you map these indices to the respective valu...
Counting null and non-null values in a single query
...n this as a "run once query to spot how many nulls we have", I don't even know why ^^', going to correct, thanks.
– Alberto Zaccagni
Aug 13 '09 at 13:29
1
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Store images in a MongoDB database
... @AbhishekMani the other solution is not to store them in MongoDB at all. Now, in 2018, it's infinitely easier to write this data to something like Amazon's S3 or Azure BLOB storage.
– Gates VP
Nov 1 '18 at 16:40
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How to hide reference counts in VS2013?
...references' indicators, that would reduce unnecessary repetition. Anybody know if that is possible?
– GONeale
Oct 28 '13 at 0:51
4
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How can I concatenate NSAttributedStrings?
...g()
result.append(left)
result.append(right)
return result
}
Now you can concatenate them just by adding them:
let helloworld = NSAttributedString(string: "Hello ") + NSAttributedString(string: "World")
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Is bool a native C type?
...language defined by the ANSI C89 / ISO C90 standard. Since C standards are now published by ISO first, and since there have been three ISO C standards, with varying levels of adoption, it's best to refer to the year the standard was publlshed (ISO C90, ISO C99, ISO C11) to avoid any confusion.
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How do I type using my keyboard on the iphone simulator?
...eyboard
Command-K Toggle (Show/Hide) Software Keyboard
And, you know, I really suffered for last 2 months, until found it, and it is very convenient now))
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