Lambda to Expression tree conversion

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You must assign the lambda to a different type:

// Gives you a delegate:
Func<int, int> f = x => x * 2;
// Gives you an expression tree:
Expression<Func<int, int>> g = x => x * 2;

The same goes for method arguments. However, once you’ve assigned such a lambda expression to a Func<> type, you can’t get the expression tree back.

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