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How do I check (at runtime) if one class is a subclass of another?
...ay. IMO, exceptions should NEVER be used for control flow. If you think an error might occur, protect against it... don't treat it like a GOTO. Interesting link you posted, though
– leviathanbadger
Apr 7 '17 at 4:51
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Nokogiri installation fails -libxml2 is missing
...:
sudo apt-get install libxslt-dev libxml2-dev
If you still receive the error, you may be missing a compiler toolchain:
sudo apt-get install build-essential
You'll get the "libxml2 is missing" error if you're missing a build toolchain (at least I ran into this issue on Debian Lenny).
The Noko...
What is the parameter “next” used for in Express?
...q.params.userId }, function(err, user) {
if (err) {
next(new Error("Couldn't find user: " + err));
return;
}
req.user = user;
next();
});
} else {
next();
}
}
// ...
app.get('/user/:userId', loadUser, function(req, res) {
// do something with ...
How do I fix the Visual Studio compile error, “mismatch between processor architecture”?
... to disable the warning:
<PropertyGroup>
<ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>None</ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>
</PropertyGroup>
share
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Running Python on Windows for Node.js dependencies
...
Your problem is that you didn't set the environment variable.
The error clearly says this:
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
And in your comment, you say you did this:
set PYTHONPATH=%PYTHONPATH%;C:\My_python_lib
That's n...
javax.xml.bind.UnmarshalException: unexpected element (uri:“”, local:“Group”)
...to fix mine problem with iowatiger08 solution.
Here is my fix showing the error message to help join the dots for some.
Error message
javax.xml.bind.UnmarshalException: unexpected element
(uri:"http://global.aon.bz/schema/cbs/archive/errorresource/0",
local:"errorresource"). Expected eleme...
Ruby 'require' error: cannot load such file
I've one file, main.rb with the following content:
13 Answers
13
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How to redirect the output of a PowerShell to a file during its execution
... stop it if it's already running, then start it, and stop it when done.
$ErrorActionPreference="SilentlyContinue"
Stop-Transcript | out-null
$ErrorActionPreference = "Continue"
Start-Transcript -path C:\output.txt -append
# Do some stuff
Stop-Transcript
You can also have this running while worki...
Android requires compiler compliance level 5.0 or 6.0. Found '1.7' instead. Please use Android Tools
...nybody have similar problem with this, I import android project and I get
errors like
12 Answers
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Entity Framework: “Store update, insert, or delete statement affected an unexpected number of rows (
...populate a grid control. Sometimes when I make updates I get the following error:
45 Answers
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