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Why `null >= 0 && null
...d assigns 0 to the variable if not, where the variable is initially null or undefined .
5 Answers
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How to normalize a NumPy array to within a certain range?
After doing some processing on an audio or image array, it needs to be normalized within a range before it can be written back to a file. This can be done like so:
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Scala downwards or decreasing for loop?
In Scala, you often use an iterator to do a for loop in an increasing order like:
7 Answers
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Fastest Way to Serve a File Using PHP
...he solutions from it and from others in the discussion.
The solutions are ordered from best solution to worst but also from the solution needing the most control over the web server to the one needing the less. There don't seem to be an easy way to have one solution that is both fast and work every...
JavaScript check if variable exists (is defined/initialized)
Which method of checking if a variable has been initialized is better/correct?
(Assuming the variable could hold anything (string, int, object, function, etc.))
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zsh compinit: insecure directories
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This fixed it for me:
$ cd /usr/local/share/zsh
$ sudo chmod -R 755 ./site-functions
Credit: a post on zsh mailing list
EDIT: As pointed out by @biocyberman in the comments. You may need to update the owner of site-functions as well:
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In PowerShell, how do I define a function in a file and call it from the PowerShell commandline?
...is on the PowerShell command line:
. .\MyFunctions.ps1
A1
The dot operator is used for script include.
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How to determine if a process runs inside lxc/Docker?
...whether they run inside a virtual machine, is something similar available for lxc/docker?
15 Answers
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Getting the name of a variable as a string
...github.com/pwwang/python-varname
In your case, you can do:
from varname import Wrapper
foo = Wrapper(dict())
# foo.name == 'foo'
# foo.value == {}
foo.value['bar'] = 2
For list comprehension part, you can do:
n_jobs = Wrapper(<original_value>)
users = Wrapper(<original_value>)
queue...
What does $(function() {} ); do?
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$(function() { ... });
is just jQuery short-hand for
$(document).ready(function() { ... });
What it's designed to do (amongst other things) is ensure that your function is called once all the DOM elements of the page are ready to be used.
However, I don't thin...