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Painless way to install a new version of R?
...s which are said to comprise tools helping with e.g. this bulk library relocations. Caveat: I have not used them.
Don't install libraries within the 'filetree' of the installed R version. On Windows, I may put R into C:/opt/R/R-$version but place all libraries into C:/opt/R/library/ using the follo...
How to ignore xargs commands if stdin input is empty?
...t, put that e.g. in $HOME/bin and add it to the PATH:
#!/bin/bash
stdin=$(cat <&0)
if [[ $1 == "-r" ]] || [[ $1 == "--no-run-if-empty" ]]
then
# shift the arguments to get rid of the "-r" that is not valid on OSX
shift
# wc -l return some whitespaces, let's get rid of them with t...
How to disable typing special characters when pressing option key in Mac OS X? [closed]
...is to download Ukulele from here:
http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=ukelele
In the application you can create a new keylayout using File -> New from current source. Pressing Option will show you in the place for Option-b a red colored key - meaning it's a dead key....
Modify SVG fill color when being served as Background-Image
...server-side script, to make sure you also send the correct MIME header. In PHP this would be: <?php header('Content-type: image/svg+xml'); ?>
– slightlyfaulty
Aug 21 '14 at 10:53
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PowerShell: Setting an environment variable for a single command only
...OO=foo BAR=bar your command here
# To use it with dot-env files
env.exe $(cat .env | grep.exe -v '^#') SOME_OTHER_ENV=val your command
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Check to see if python script is running
...le shell script to check it for you using the return code from ps.
ps up `cat /tmp/mydaemon.pid ` >/dev/null && echo "Running" || echo "Not running"
For extra credit, you can use the atexit module to ensure that your program cleans up its pidfile under any circumstances (when killed, e...
Is std::vector copying the objects with a push_back?
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@tuple_cat your comment should say "if the argument is an rvalue". (If the argument is the name of an entity declared as rvalue reference, then the argument is actually an lvalue and will not be moved from) - check my edit to the a...
HTML select form with option to enter custom value
...one know how to convert the action to a POST, so I can grab the value in a php file and do something with it there?
– Han
Sep 29 '19 at 8:17
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MySQL Error 1093 - Can't specify target table for update in FROM clause
I have a table story_category in my database with corrupt entries. The next query returns the corrupt entries:
16 Answers...
Concatenate a vector of strings/character
If I have a vector of type character, how can I concatenate the values into string? Here's how I would do it with paste() :
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