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Hidden Features of Xcode 4
...ovide a nice visual grouping in the Xcode class dropdown list. Xcode 4 now combines these into a single #pragma mark - <name>.
More on pragma mark.
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edited Feb ...
Why is vertical-align: middle not working on my span or div?
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ssh remote host identification has changed
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Delete with Join in MySQL
... edited May 23 '17 at 11:54
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answered Nov 16 '10 at 9:51
YehosefYehosef
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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...
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...
.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
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