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JavaScript closure inside loops – simple practical example
...mous function expression that is invoked immediately and index becomes set from i.
– Eggs
Apr 14 at 5:51
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What is a correct mime type for docx, pptx etc?
...> pip install python-magic
>>> import magic
>>> magic.from_file("Employee.pdf", mime=True)
'application/pdf'
Using built-in mimeypes module - Map filenames to MimeTypes modules
>>> import mimetypes
>>> mimetypes.init()
>>> mimetypes.knownfiles
['/et...
How to jump directly to a column number in Vim
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This is especially nice for opening Vim from other tools, as this call can be done on the command-line: "+call cursor($LINE,$COLUMN)"
– Laurence Gonsalves
Sep 27 '19 at 20:18
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How to detect if a specific file exists in Vimscript?
...ses the issue of having a file that does exist, but permissions prevent it from being read. If you want to detect such cases, the following will work:
:if !empty(glob("path/to/file"))
: echo "File exists."
:endif
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Qt: *.pro vs *.pri
... write the common settings and code into those .pri files and include them from several .pro files as the need arises. This is how you would use it in practice:
foo.pri
FOO = BAR
hello.pro
...
include($$PWD/foo.pri)
...
world.pro
...
include($$PWD/foo.pri)
...
This way, the commonality would be a...
Test if a command outputs an empty string
... 0m0.004s
user 0m0.000s
sys 0m0.007s
Full example
Updated example from the answer by Will Vousden:
if [[ $(ls -A | wc -c) -ne 0 ]]; then
echo "there are files"
else
echo "no files found"
fi
Updated again after suggestions by netj:
if [[ $(ls -A | head -c1 | wc -c) -ne 0 ]]; then...
Creating a new column based on if-elif-else condition
...er of records. Still, I think it is much more readable. Especially coming from a SAS background.
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What is a good choice of database for a small .NET application? [closed]
..., you can create your own custom functions. Here are a couple of examples:
From SOAnoter example
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Rails migrations: self.up and self.down versus change
...erfluous (you can see in the documentation the methods currently supported from the change method).
But pay attention because for some kind of operation you still need to define the down method, for example if you change the precision of a decimal column how to guess the original precision on rollb...
Nginx not picking up site in sites-enabled?
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Changing from:
include /etc/nginx/sites-enabled/*;
to
include /etc/nginx/sites-enabled/*.*;
fixed my issue
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