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MVC 5 Seed Users and Roles
...u to edit your tables without re-creating your tables. There is only three commands you need to familiarize yourself with using the NuGet Package Manager Console. Enable-Migrations, Add-Migration, & update-database. Easy peazy.
– yardpenalty.com
Mar 6 '14 a...
How does #include work in C++? [duplicate]
...h source.
Using it would include a lot of unnecessary stuff and increases compilation time.
Edit: As Neil says, it's an implementation for precompiled headers. If you set it up for precompilation correctly it could, in fact, speed up compilation time depending on your project. (https://gcc.gnu.org...
Filter rows which contain a certain string
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The answer to the question was already posted by the @latemail in the comments above. You can use regular expressions for the second and subsequent arguments of filter like this:
dplyr::filter(df, !grepl("RTB",TrackingPixel))
Since you have not provided the original data, I will add a toy ex...
Creating a singleton in Python
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Use a Metaclass
I would recommend Method #2, but you're better off using a metaclass than a base class. Here is a sample implementation:
class Singleton(type):
_instances = {}
def __call__(cls, *args, **kwargs):
if cls not in cls._inst...
Why are margin/padding percentages in CSS always calculated against width?
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Transferring my comment to an answer, because it makes logical sense. However, please note that this is unfounded conjecture. The actual reasoning of why the spec is written this way is still, technically, unknown.
Element height is defi...
.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
...ng that there will never be any confusion regarding where the exception is coming from- the framework, or your application. The framework will never throw your custom exceptions.
UPDATE: I agree with the comments, so I have changed the subclass to ConfigurationErrorsException from Exception. I t...
How can I clear or empty a StringBuilder? [duplicate]
...r.Clear in the documentation, just the delete method which seems overly complicated.
9 Answers
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How to run Conda?
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@NewNameStat: See this thread stackoverflow.com/questions/9127405/…
– petezurich
Aug 22 '17 at 19:56
3
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Ruby Bundle Symbol not found: _SSLv2_client_method (LoadError)
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Just to add to this, if a boxen user comes across this - I could not get rbenv to reinstall using the commands above - so I had to uninstall and reinstall 2.1.2 using rbenv rbenv uninstall 2.1.2 rbenv install 2.1.2 bundle
– jeffsaracco
...
Programmatically get the version number of a DLL
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I recommend Assemblyname.GetAssemblyName to avoid these issues
– staafl
Oct 10 '13 at 13:50
8
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