Why are 'out' parameters in .NET a bad idea?

Question

Why are \'out\' parameters in .NET a bad idea?

I was recently asked this, but I had no real answer besides it\'s simply unnecessarily complicating an application. Wh

Answer 1

The out keyword is necessary (see SortedDictionart.TryGetValue). It implies pass by reference and also tells the compiler that the following:

int value;
some_function (out value);

is OK and that some_function isn't using an unitialised value which would normally be an error.