The below does not compile:
Func<int, int> fac = n => (n <= 1) ? 1 : n * fac(n - 1);
Local variable 'fac' might not be initialized before accessing
How can you make a recursive function with lambdas?
[Update]
Here are also two links that I found interesting to read:
- Eric Lippert's "Why does a recursive lambda cause a definite assignment error?"
- Anonymous Recursion in C#