CFD Online Discussion Forums - List cannot be trusted...?

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)

- OpenFOAM Programming & Development (https://www.cfd-online.com/Forums/openfoam-programming-development/)

- - List cannot be trusted...? (https://www.cfd-online.com/Forums/openfoam-programming-development/78359-list-cannot-trusted.html)

List cannot be trusted...?

Why does setSize() trash my data?

I have:

Code:

class: equationMaster

{

    List<equation> eqns_;

}

Where equation is itself a list:

Code:

class: equation

:

    public List<operation>

{

    // null constructor, friend operators << and >>

   // construct from components and IStream

}

and operation is

Code:

class: operation

{

   // four labels defined, some with enumeration

   // null constructor, friend operators << and >>

   // construct from components and IStream

}

Now, when I do this:

Code:

eqns_.setSize(eqns_size() + 1);

it trashes my operation list.

Anyone with any ideas what is going on? Have I overused lists?

Any assistance would be appreciated...

-Dave

Quote:

Originally Posted by marupio (Post 268074)

it trashes my operation list.

Anyone with any ideas what is going on? Have I overused lists?

Any assistance would be appreciated...

I'd guess that the copy operation in setSize() might be causing issues.
Without actually knowing anything about your classes, you might nonetheless take a look at PtrList and see it that makes more sense for some of your operations.

Thanks Mark. (I thought it might be a constructor issue.) I did switch to PtrList and it is behaving now.