Passing a reference to an object from inside the object's member functions?

[stefven blonqhern]

Hello, something of a C++ beginner here with a (possibly) (really) bad
question:

I want to pass a reference of an object from one of the object's
member functions. Is this possible?

so something like this (i've simplified what I'm doing):

MyFuntion(TestC lass& some_object)
{
return some_object.val 1 * some_object.val 2;
}

struct TestClass : public MyClass
{
int val1;
int val2;
}

int TestClass::Pass Reference
{
int x;
x = MyFunction(this _object); // where this_object is a reference to
this TestClass!
}

How might I get this_object to refer to the correct object? This
might seem ridiculous but I'm working within a DSP plugin architecture
if that helps get me off the hook. Is it possible? If so, is it
dangerous?

thanks,

Stefven Blonqhern

[Victor Bazarov]

stefven blonqhern wrote:

Hello, something of a C++ beginner here with a (possibly) (really) bad
question:

I want to pass a reference of an object from one of the object's
member functions. Is this possible?

Sounds possible.

so something like this (i've simplified what I'm doing):

MyFuntion(TestC lass& some_object)

No return value type. Did you mean

ValueType MyFunction(Test Class& some_object)

?

Also, why isn't 'someobject' a reference to *const* TestClass? As in

ValueType MyFunction(Test Class const & some_object)

??

{
return some_object.val 1 * some_object.val 2;
}

struct TestClass : public MyClass
{
int val1;
int val2;
}

;

>
int TestClass::Pass Reference

Did you mean to have an argument list succeeding the name of the
function, as in

int TestClass::Pass Reference()

???

{
int x;
x = MyFunction(this _object); // where this_object is a reference to
this TestClass!

Have you tried derefereincing 'this'? As in

x = MyFunction(*thi s);

????

}

How might I get this_object to refer to the correct object? This
might seem ridiculous but I'm working within a DSP plugin architecture
if that helps get me off the hook. Is it possible? If so, is it
dangerous?

No, it's not dangerous.

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

[Neelesh Bodas]

On Jul 5, 11:18 pm, stefven blonqhern <robo_cree...@y ahoo.co.uk>
wrote:

Hello, something of a C++ beginner here with a (possibly) (really) bad
question:

I want to pass a reference of an object from one of the object's
member functions. Is this possible?

so something like this (i've simplified what I'm doing):

MyFuntion(TestC lass& some_object)
{
return some_object.val 1 * some_object.val 2;

}

Two things
1. MyFunction must have a return type. (I guess you forgot to type
that)
2. Since you are not modifying some_object, pass it as a const
reference
int MyFunction (const TestClass& some_object)

struct TestClass : public MyClass
{
int val1;
int val2;

}

missing semicolon at end of struct definition, you should also
declare PassReference in the class, since you are defining it below.

int TestClass::Pass Reference
{
int x;
x = MyFunction(this _object); // where this_object is a reference to
this TestClass!

x = MyFunction(*thi s);

thanks,

Stefven Blonqhern

[stefven blonqhern]

Okay many thanks Victor and Neelesh.

Two things
1. MyFunction must have a return type. (I guess you forgot to type
that)

Yes i forgot that. My code was simplified just to illustrate my
overall intentions.

2. Since you are not modifying some_object, pass it as a const
reference
int MyFunction (const TestClass& some_object)

Actually I will be modifying some_object.

x = MyFunction(*thi s);

Right, I didn't imagine it would be that simple for some reason.

Thanks again, Stefven.