How do I write a forward declaration in a class in dlang

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I want to make a forward declaration for a function, which is a class member. How do I do this?

What I have tried:

I've tried this code:

C++

class TQ{
public:
	int a,b;
	int GetA(string s);
}

int TQ.GetA(string s){
	return this.a;
}

But id doesn't compile, saying that a semicolon is expected in Line 7 instead of the '.', but the semicolon doesn't solve the problem.

Posted 17-Mar-16 20:17pm

Nafees Hassan

Updated 18-Mar-16 12:41pm

Patrice T

v3

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Comments

Patrice T 18-Mar-16 2:28am

And the language is ?

Nafees Hassan 18-Mar-16 2:29am

Mentioned in the heading, D.

Patrice T 18-Mar-16 2:44am

You just forgot to say it in TAGs.
Use Improve question to update your question.

Nafees Hassan 18-Mar-16 2:58am

There is no tag for D.

Brisingr Aerowing 18-Mar-16 2:36am

I noticed that in the class definition, the name of the method is Get, but the definition below is named GetA, which should cause a compiler error like the one you see.

Nafees Hassan 18-Mar-16 2:58am

I tried that, still won't work.

2 solutions

Solution 1

Did you try something like:

C#

class TQ{
public:
    int a,b;
    int GetA(string s){
        return this.a;
    };
}

Posted 17-Mar-16 21:08pm

Patrice T

Comments

Nafees Hassan 18-Mar-16 5:21am

I know this way works, but I want to make a forward declaration in the class (Line in C++), and define the function afterwards.

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Brisingr Aerowing · Accepted Answer · 2016-03-18T12:41:00

Solution 2

You cannot do that[^] as it isn't needed nor allowed.

Posted 18-Mar-16 12:41pm

Brisingr Aerowing

Comments

Nafees Hassan 19-Mar-16 1:37am

Thanks, I had nearly broken my entire code trying to do that.