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How do you pass a function as a parameter in C?
...ion parameter looks like the following:
void func ( void (*f)(int) );
This states that the parameter f will be a pointer to a function which has a void return type and which takes a single int parameter. The following function (print) is an example of a function which could be passed to func as a...
Why does C# disallow readonly local variables?
Having a friendly debate with a co-worker about this. We have some thoughts about this, but wondering what the SO crowd thinks about this?
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C# Interfaces. Implicit implementation versus Explicit implementation
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Implicit is when you define your interface via a member on your class. Explicit is when you define methods within your class on the interface. I know that sounds confusing but here is what I mean: IList.CopyTo would be implicitly impl...
Why is my git repository so big?
...4GB (!) of wasted space in my repository. I was only able to get rid of this by cloning it with git clone file:///path/to/repository. Note that the file:// makes a world of difference when cloning a local repository - only the referenced objects are copied across, not the whole directory structure...
How do I forward declare an inner class? [duplicate]
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This is simply not possible. You cannot forward declare a nested structure outside the container. You can only forward declare it within the container.
You'll need to do one of the following
Make the class non-nested
Ch...
Get the new record primary key ID from MySQL insert query?
...INSERT into one of my tables and the table has the column item_id which is set to autoincrement and primary key .
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Regular Expressions: Is there an AND operator?
Obviously, you can use the | (pipe?) to represent OR , but is there a way to represent AND as well?
12 Answers
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What's the difference between django OneToOneField and ForeignKey?
... Django:
OneToOneField
A one-to-one relationship. Conceptually, this is similar to a ForeignKey with unique=True, but the "reverse" side of the relation will directly return a single object.
In contrast to the OneToOneField "reverse" relation, a ForeignKey "reverse" relation returns a Que...
Why would one use the Publish/Subscribe pattern (in JS/jQuery)?
So, a colleague introduced me to the publish/subscribe pattern (in JS/jQuery), but I'm having a hard time getting to grips with why one would use this pattern over 'normal' JavaScript/jQuery.
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“From View Controller” disappears using UIViewControllerContextTransitioning
...o inspect the view hierarchy after the screen goes black. The key UIWindow is completely empty – no view hierarchy at all!
I played around a bit and it looks like there is an easy workaround, for simple cases. You can just re-add the toViewController's view as a subview of the key window's:
tr...