C++ equivalent for C# Action passing

Question

can somebody help me find a solution? I want to know whether there is a C++ equivalent for the following C# code:

// C# Code here

private void Execute(Action action)
{
    action();
}

Which can be called like this:

this.Execute( () => { this.DoA(); this.DoB(); } );

Now what I have come up with is to wrap the calls to this.DoA(); and this.DoB(); in another method and pass that as a function pointer:

// C++ Code here

void Execute(void (*f))
{
    (*f);
}

and

void DoBoth()
{
    DoA();
    DoB();
}

so then it can be called like this, which also works:

Execute(DoBoth);

But I am looking for a way without having to declare a method DoBoth. I know I could just use multiple parameters, but I dont want to restrict the number of the parameters and therefore I was hoping for a way like in C#.

Any help is gladly appreciated.

Why not pass a list of function pointers and run each one of them? — CinCout, Jun 14 '17 at 07:13
@CinCout I would do that but it is rather ugly and unreadable, thats why I was looking for another way — Thomas Flinkow, Jun 14 '17 at 07:18
@PeterDuniho thank you for that, it is what I was looking for. Now do I delete the question or can I close it any other way? — Thomas Flinkow, Jun 14 '17 at 07:19
I doubt your question will be one of those searchable "signpost" duplicates, but if you disagree you can vote-to-close using the same duplicate. Otherwise, deletion seems appropriate. — Peter Duniho, Jun 14 '17 at 07:24
I votet to close using the duplicate, and I am going to delete it now. Thank you for your help though — Thomas Flinkow, Jun 14 '17 at 07:25

score 1 · Accepted Answer · answered Jun 14 '17 at 07:17

The term you're looking for is "lambda expression". Basically, it's a anonymous function.

I'll be honest, I have zero experience with C++ lambda.

They've been introduced in C++ 11 it would seem, and take the following form:

[]() {}

Instead of making plagiarism, I'll redirect you to this stackoverflow question, which seems to have excellent answers.

C++ equivalent for C# Action passing

1 Answers1