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What exactly is a C pointer if not a memory address?
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Importing data from a JSON file into R
...omJSON(paste(readLines(json_file), collapse=""))
Update: since version 0.2.1
json_data <- fromJSON(file=json_file)
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Case insensitive comparison of strings in shell script
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How do I assert an Iterable contains elements with a certain property?
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Thank you @Razvan who pointed me in the right direction. I was able to get it in one line and ...
Size of Matrix OpenCV
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cv:Mat mat;
int rows = mat.rows;
int cols = mat.cols;
cv::Size s = mat.size();
rows = s.heigh...
What is the minimum I have to do to create an RPM file?
...ir %(echo $HOME)/rpmbuild
%_tmppath %{_topdir}/tmp
EOF
cd ~/rpmbuild
2. create the tarball of your project
mkdir toybinprog-1.0
mkdir -p toybinprog-1.0/usr/bin
mkdir -p toybinprog-1.0/etc/toybinprog
install -m 755 toybinprog toybinprog-1.0/usr/bin
install -m 644 toybinprog.conf toybinprog-1.0...
How to exit from PostgreSQL command line utility: psql
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Type \q and then press ENTER to quit psql.
UPDATE: 19-OCT-2018
As of PostgreSQL 11, the key...
Android webview launches browser when calling loadurl
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edited Jun 28 '16 at 15:21
Jagat Dave
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Python data structure sort list alphabetically
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[] denotes a list, () denotes a tuple and {} denotes a dictionary. You should take a look at t...
How to delete all Annotations on a MKMapView
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Yes, here is how
[mapView removeAnnotations:mapView.annotations]
However the previous li...