Shorthand for initializing delegates

Question

Let's say I had a method that took a delegate as a parameter, like this:

public delegate void SampleDelegate(int foo);

public void DoSomething(SampleDelegate del) 
{
    //Does something
}

Would there be a shorthand for doing something like this?

static void Main(String[] args)
{
    void bar(int foo) {
        int x = foo;
    } 
    DoSomething(bar);
}

Or is this the most efficient way to do this?

Ideally, I would do something like this:

static void Main(String[] args)
{
    DoSomething(void(int foo) {
        int x = foo;
    });
}

but that generates syntax errors. Is there a proper syntax for doing something like the above?

@Tim_Schmelter The ideal approach I showed would make for cleaner code by not using the variable name bar and simpliyfing things into a few lines. — tobahhh, May 28 '18 at 13:40
How do you qualify "most efficient"? Performance? Characters? — Patrick Hofman, May 28 '18 at 13:42
Seems like this would to exactly what you want: https://stackoverflow.com/questions/2082615/pass-method-as-parameter-using-c-sharp — MakePeaceGreatAgain, May 28 '18 at 13:44

score 2 · Accepted Answer · answered May 28 '18 at 13:40

2

You can use a lambda expression to create a function as an expression:

DoSomething(myInt => { ... });

You don't need to declare SampleDelegate either. You can use Action<int>.

answered May 28 '18 at 13:40

usr

1 Answers1