Storing a Lambda Expression in a Variable

Question

I think my brain has become fried as i\'m struggling to do something simple. In my application i have the following code to configure Nhibernate (my issue is not specific t

Answer 1

Sure. Assuming _configuration is going to store what you were using in your first bit of code. It should look something like this:

return Fluently.Configure().ExposeConfiguration(c => {
c.EventListeners.PostInsertEventListeners = _configuration;
c.EventListeners.PostUpdateEventListeners = _configuration;});

If there are any kind of cast errors from the compiler, you can always use:

_configuration.Cast<IPostInsertEventListeners>();

Answer 2

A lambda expression is just a delegate that often maps to one of the Func<T1, T2, ..., TResult> variants.

Func<T1, TResult> myVar = c => _configuration = c;

Replacing TResult and T1 with the relevant types.

That might work for you.

Answer 3

With C# 7.0 local functions

TResult matchDuplicates (T1 c) => _configuration = c;