How to recursively decompose an expression tree?

Question

C++ / C#

// Creating an expression tree.
Expression<Func<int, int>> expr = num => (num * 5)+ (num * 4);

// Compiling the expression tree into a delegate.
Func<int, int> result = expr.Compile();

var r = result(4);

Answer 1

The right way is to use the Expression Tree Visitor: an example from MSDN . This class allows you to traverse the entire tree and even modify it.