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Should we pass a shared_ptr by reference or by value?
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This question has been discussed and answered by Scott, Andrei and Herb during Ask Us Anything session at C++ and Beyond 2011. Watch from 4:34 on shared_ptr performance and correctness.
Shortly, there is no reason to pass by v...
What is /dev/null 2>&1?
I found this piece of code in /etc/cron.daily/apf
7 Answers
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How should I cast in VB.NET?
...ightly different, and generally have an acceptable usage.
var.ToString() is going to give you the string representation of an object, regardless of what type it is. Use this if var is not a string already.
CStr(var) is the VB string cast operator. I'm not a VB guy, so I would suggest avoiding it...
C++ catch blocks - catch exception by value or reference? [duplicate]
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The standard practice for exceptions in C++ is ...
Throw by value, catch by reference
Catching by value is problematic in the face of inheritance hierarchies. Suppose for your example that there is another type MyException which inherits from CustomException and...
What are metaclasses in Python?
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A metaclass is the class of a class. A class defines how an instance of the class (i.e. an object) behaves while a metaclass defines how a class behaves. A class is an instance of a metaclass.
While in Python you can use arbitrary calla...
What's an Aggregate Root?
...ching both the web and Stack Overflow for help with what an aggregate root is, I keep finding discussions about them and dead links to pages that are supposed to contain base definitions.
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Difference between margin and padding?
What exactly is the difference between margin and padding in CSS? It really doesn't seem to serve much purpose. Could you give me an example of where the differences lie (and why it is important to know the difference)?
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Is LINQ to SQL Dead or Alive?
Just when I make friends with LINQ to SQL, it appears as though MS is pulling the rug out from under it.
16 Answers
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What is the difference between loose coupling and tight coupling in the object oriented paradigm?
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Tight coupling is when a group of classes are highly dependent on one another.
This scenario arises when a class assumes too many responsibilities, or when one concern is spread over many classes rather than having its own class.
Loose c...
Which are more performant, CTE or temporary tables?
...t concepts but not too different to say "chalk and cheese".
A temp table is good for re-use or to perform multiple processing passes on a set of data.
A CTE can be used either to recurse or to simply improved readability.
And, like a view or inline table valued function can also be treated like a...