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What is causing this ActiveRecord::ReadOnlyRecord error?
This follows this prior question, which was answered. I actually discovered I could remove a join from that query, so now the working query is
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Hosting Git Repository in Windows
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If you get the error cygrunsrv: Error starting a service: QueryServiceStatus: Win32 error 1062: The service has not been started. after running the command:
cygrunsrv --start gitd
that means that you did not create the 'base-path' folde...
What can I do to resolve a “Row not found or changed” Exception in LINQ to SQL on a SQL Server Compa
...he exception in your global exception handler:
protected void Application_Error(object sender, EventArgs e)
{
Exception ex = Server.GetLastError();
//TODO
}
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Xcode suddenly stopped running project on hardware: “Could not launch xxx.app: .. No such file..” [c
...
That is really annoying. This error happens in a number of different situations. Sometimes restarting the Xcode, fixes the problem. If not, follow these steps:
Disconnect your device.
Delete the app from your device.
Quit Xcode (Do not just simply cl...
Where do “pure virtual function call” crashes come from?
I sometimes notice programs that crash on my computer with the error: "pure virtual function call".
8 Answers
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Seeking clarification on apparent contradictions regarding weakly typed languages
...a, b) # returns 4
Strong Typing
a = 2
b = "2"
concatenate(a, b) # Type Error
add(a, b) # Type Error
concatenate(str(a), b) #Returns "22"
add(a, int(b)) # Returns 4
Notice that a weak typing language can intermix different types without errors. A strong type language requires the input types to...
When should I use ugettext_lazy?
...ttext as _, ugettext_noop as _noop
def view(request):
msg = _noop("An error has occurred")
logging.error(msg)
return HttpResponse(_(msg))
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Android Studio says “cannot resolve symbol” but project compiles
...ect).
wait for android studio to load everything.
It will give you some errors, ignore those.
Now go to your java file and android studio will suggest you import
import android.support.v4.app.FragmentActivity;
Import it, then go back to Open Module Settings and change the compile sdk ver...
C++ Double Address Operator? (&&)
...; a)
{
//Some magical code...
}
int main()
{
int b;
foo(b); //Error. An rValue reference cannot be pointed to a lValue.
foo(5); //Compiles with no error.
foo(b+3); //Compiles with no error.
int&& c = b; //Error. An rValue reference cannot be pointed to a lValue.
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vagrant up failed, /dev/vboxnetctl: no such file or directory
Can be useful, I found this error. The common solution is reinstall virtualbox but there are a better way.
8 Answers
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