Linq expression that would always return true

Question

I need to pass a parameter to a method that requires an Expression<Func<T, bool>>.

How to do I pass an expression that would always return true?

Using obj => true doesn't work because the framework complains at runtime that it cannot determine the memeber type from the True constant.

Answer 1

If you have a function like this

void TakeExpression<T>(Expression<Func<T, bool>> expr)

You should call it this way, specifying the T type :

TakeExpression<int>(_ => true)

It should work.

Answer 2

You need to define the parameter type you are passing:

(object o) => true 

Or

(int a) => true