What is this lambda expression with Unity Resolver doing

Question

Looking through someone else's code I found this line of code:

     protected IDirectIp Iridium => _resolver.Resolve<IDirectIp>();

I was confused seeing a lambda (=>) instead of an equal sign (=). The dependency injection library is Unity, is this syntax specific to Unity?

Could anyone explain what this expression is doing?

score 4 · Accepted Answer · edited May 24 '16 at 17:51

4

That's an expression bodied function. This was added in c# 6.0 and is equivalent to

protected IDirectIp Iridium
{
    get { return _resolver.Resolve<IDirectIp>(); }
}

edited May 24 '16 at 17:51

dcastro

answered May 24 '16 at 17:50

Chris

score 2 · Answer 2 · answered May 24 '16 at 17:49

2

It's a shortcut added in C# 6.0 for defining the get body of a readonly property

answered May 24 '16 at 17:49

mdickin

score 1 · Answer 3 · answered May 24 '16 at 17:50

1

It is an expression bodied member from C# 6.0.

It is just shorthand for a property getter that returns everything after the =>.

answered May 24 '16 at 17:50

DaveShaw

3 Answers3