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Using R to download zipped data file, extract, and import data
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Zip archives are actually more a 'filesystem' with content metadata etc. See help(unzip) for details. So to do what you sketch out above you need to
Create a temp. file name (eg tempfile())
Use download.file() to fetch the file into the temp. file
Use unz() to extract the target file from...
How to check for null in Twig?
...ow) to check whether a variable is empty (null, false, empty string/array, etc):
{% if var|default is empty %}
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Clearing localStorage in javascript?
...ear() when my app starts up, but even if I close the browser, clear cache, etc., the data are still there. I know this because I have set an "instance" property on my model to a random number on initialize, and, for a given id, the instance property is always the same.
– sydne...
How do I find which program is using port 80 in Windows? [duplicate]
...80", so besides port 80, it will also matches programs on port 8009, 8080, etc.
– Benny Neugebauer
Feb 4 '18 at 16:15
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Trusting all certificates with okHttp
...TimeUnit.SECONDS) .writeTimeout(api.timeout, TimeUnit.SECONDS) etc., it's a builder pattern after all
– Emanuel Moecklin
Jul 30 at 15:46
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How to find the mysql data directory from command line in windows
...need the value of datadir as output, and only that, without column headers etc, but you don't have a GNU environment (awk|grep|sed ...) then use the following command line:
mysql -s -N -uUSER -p information_schema -e 'SELECT Variable_Value FROM GLOBAL_VARIABLES WHERE Variable_Name = "datadir"'
Th...
Windows path in Python
...can use / paths in all other places (code editor, Python interactive mode, etc.).
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Generating a PNG with matplotlib when DISPLAY is undefined
...> matplotlib.matplotlib_fname()
# This is the file location in Ubuntu
'/etc/matplotlibrc'
Then modify the backend in that file to backend : Agg. That is it.
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What does the NS prefix mean?
...oprietary term
for the OpenStep framework, NeXTSTEP): NSString, NSArray, etc.
Foundation Kit, or more commonly simply Foundation, first appeared in
OpenStep. On Mac OS X, it is based on Core Foundation. Foundation is a
generic object-oriented library providing string and value
manipulat...
Can't connect to local MySQL server through socket '/tmp/mysql.sock
... about your MySQL config, exactly how you're instantiating the connection, etc.
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