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How can I determine if a variable is 'undefined' or 'null'?
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I'm trying to test if event is null in firefox and an error blocks the execution: "event is undefined"
– Entretoize
Sep 6 '18 at 10:32
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'Incomplete final line' warning when trying to read a .csv file into R
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@JorisMeys The error message, however, refers to the last line of the file. Taking the steps above does indeed remove the warning.
– WorldGov
Apr 30 at 16:36
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How do you install Google frameworks (Play, Accounts, etc.) on a Genymotion virtual device? [duplica
...ion/support (this is what causes the "INSTALL_FAILED_CPU_ABI_INCOMPATIBLE" errors) and Google Play apps in your Genymotion VM.
Download the following ZIPs:
ARM Translation Installer v1.1 (Mirrors)
If you have issues flashing ARM translation, try re-downloading from a mirror
Download the correct GA...
Oracle JDBC ojdbc6 Jar as a Maven Dependency
... Just a note: After following these steps, I still had the same error in eclipse until I performed Maven > Update Project. Then everything worked beautifully. This step might be obvious, but I figured I would add it.
– user12893298320392
Jul 27 ...
How to un-submodule a Git submodule?
..._lte 2.8.4
then
# Previous to git 2.9.0 the parameter would yield an error
ALLOW_UNRELATED_HISTORIES=""
else
# From git 2.9.0 this parameter is required
ALLOW_UNRELATED_HISTORIES="--allow-unrelated-histories"
fi
git merge -s ours --no-commit ${ALLOW_UNRELATED_HISTORIES} "${s...
HTTP status code for a partial successful request
...nsfer Protocol deals with the transmission side of things. It doesn't have error codes to deal with application level errors.
Returning 200 is the right thing to do here. As far as HTTP is concerned the request was received properly, handled properly and you're sending the response back. So, on th...
git command to move a folder inside another
...e move.
Note: "git mv A B/", when B does not exist as a directory, should error out, but it didn't.
See commit c57f628 by Matthieu Moy (moy) for Git 1.9/2.0 (Q1 2014):
Git used to trim the trailing slash, and make the command equivalent to 'git mv file no-such-dir', which created the file no-such-...
Why does a return in `finally` override `try`?
...// Get DB records etc.
return res.send('try');
} catch(e) {
// log errors
} finally {
return res.send('finally');
}
This code will show the string try in your browser. ALSO, the example will show an error in your console. The res.send() function is called twice. This will happen with an...
When to use extern in C++
...n 2 files include the same header file, it won't link (linker will emit an error about "duplicate symbol")
– kuba
May 2 '12 at 21:44
67
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How to create an empty file at the command line in Windows?
...one I use is basically the one by Nomad:
.>out.txt
It does give an error:
'.' is not recognized as an internal or external command
But this error is on stderr. And > only redirects stdout, where nothing have been produced.
Hence the creation of an empty file. The error message can be ...