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How to detect online/offline event cross-browser?
... navigator.onLine is supported across all major browsers (and has been for some time): caniuse.com/#feat=online-status
– Rafael Lüder
Mar 30 '18 at 17:59
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How to change owner of PostgreSql database?
...ABASE name OWNER TO new_owner;
See the Postgresql manual's entry on this for more details.
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How to run cron job every 2 hours
... an *, the script would run every minute during every second hour.)
Don't forget, you can check syslog to see if it ever actually ran!
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How to unset max-height?
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Just a note that this doesn't work for min-height (none is not allowed and results in the value not being overriden).
– Jon
Dec 5 '16 at 11:46
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How to identify whether a file is normal file or directory
... keep in mind that these are not the only two cases. Use os.path.islink() for symlinks for instance. Furthermore, these all return False if the file does not exist, so you'll probably want to check with os.path.exists() as well.
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How do I get and set Environment variables in C#?
...nment.SetEnvironmentVariable(variable, value [, Target])
will do the job for you.
The optional parameter Target is an enum of type EnvironmentVariableTarget and it can be one of: Machine, Process, or User. If you omit it, the default target is the current process.
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Lock Android phone application to Portrait mode
... answers worked on my system but I did find the following worked perfectly for a simple app that I developed:
Within MainActivity.java add:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
to onCreate ()
This is mine:
@Override
protected void onCreate(Bundle savedInstanceStat...
How do I negate a condition in PowerShell?
...doesn't exist!"
}
You can also use !: if (!(Test-Path C:\Code)){}
Just for fun, you could also use bitwise exclusive or, though it's not the most readable/understandable method.
if ((test-path C:\code) -bxor 1) {write "it doesn't exist!"}
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Does svn have a `revert-all` command?
...version control. But you can easily write a shell script to do that like:
for file in `svn status|grep "^ *?"|sed -e 's/^ *? *//'`; do rm $file ; done
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How can I remove an entry in global configuration with git config?
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For Windows, you can edit the file at C:\Users\%USERNAME%\.gitconfig
– Shital Shah
Oct 27 '16 at 4:50
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