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“X does not name a type” error in C++
...ssageBox dataMsgBox;
};
You cannot do this the other way around: as mentioned, a class member needs to have a definition. (The reason is that the compiler needs to know how much memory User takes up, and to know that it needs to know the size of its members.) If you were to say:
class MyMessageBo...
Installing vim with ruby support (+ruby)
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One thing to keep in mind is that pulling in Ruby support from the APT package handling utility is that Apt will want to pull in ruby1.8 as well. Not an issue for me, since my "development Ruby" is on virtual machines, so I ...
Open link in new tab or window [duplicate]
...open in a new tab or a new window, since ultimately this choice should be done by the settings of the user's browser. Some people like tabs; some like new windows.
Using _blank will tell the browser to use a new tab/window, depending on the user's browser configuration and how they click on the lin...
DbEntityValidationException - How can I easily tell what caused the error?
...ride SaveChanges on your entities class. You can catch the DbEntityValidationException, unwrap the actual errors and create a new DbEntityValidationException with the improved message.
Create a partial class next to your SomethingSomething.Context.cs file.
Use the code at the bottom of this post. ...
Enable access control on simple HTTP server
...r.py (or whatever) and, depending on the Python version you are using, put one of the following codes inside.
Then you can do python simple-cors-http-server.py and it will launch your modified server which will set the CORS header for every response.
With the shebang at the top, make the file exec...
Free space in a CMD shell
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To put the free space into a variable one could use the following: @FOR /F "tokens=2 delims==" %%S IN ('wmic /NODE:"%COMPUTERNAME%" LogicalDisk Where ^(DriveType^="3" and DeviceID^="%some_folder:~0,2%"^) Get FreeSpace /VALUE') DO @SET freespace=%%S
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ValidateRequest=“false” doesn't work in Asp.Net 4
...t would be necessary. Because you can just build an web app targeting only one framework version. Just copy this line to .net 4 web.config which needs it...
– HasanG
Jun 18 '10 at 23:23
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System.Net.WebException HTTP status code
...ut fair warning that the null-conditional operator is a C# 6.0 feature, so one needs to be using a compiler that supports it. Stack Overflow answer with further details. VS 2015+ has it by default, but if one is using any kind of build/deploy environment other than just "their machine", other thing...
How can I check if my python object is a number? [duplicate]
..., numbers.Number)
Here it is in action with various kinds of numbers and one non-number:
>>> from numbers import Number
... from decimal import Decimal
... from fractions import Fraction
... for n in [2, 2.0, Decimal('2.0'), complex(2,0), Fraction(2,1), '2']:
... print '%15s %s' % (n...
WordPress is giving me 404 page not found for all pages except the homepage
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someone mistakenly updated to 3.1, so it conflicted with a plugin
– Adam
Mar 5 '11 at 19:23
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