How to access member of template in C++

[Ryland]

I have a class with a template like:

template< class ReqDataType, bool DisplayErrors, class RespDataType = RespItems >
class TransBase: public TransBaseSuper
{
...
}

and I need to be able to change DisplayErrors in subclasses but the compiler keeps balking an saying that DisplayErrors doesn't exist. Is there a way to do this?

 

[mlm]

That's looks absolutely nothing like the templates we've been working with in a class I'm taking. Have you been able to get them to work like that before in the past? Those look like they should be typedefs within the class.

 

[dighn]

How are you trying to "change" DisplayErrors? Can you give more info? Some snippet of what you are trying to do would be helpful.

 

[Templeton]

You can't. The value is statically bound at the point of instantiation. If you want a different value used, then instantiate the template with this value.

 

[Ryland]

Another guy I work with took a look at it and came back with the statically bound answer (it essentially turns into a #define type thing).

I didn't design the original class and that boolean should not be in the template design but it is and there is nothing I can do to change it.

Thanks all

 

[sao123]

Originally posted by: Ryland
I have a class with a template like:

template< class ReqDataType, bool DisplayErrors, class RespDataType = RespItems >
class TransBase: public TransBaseSuper
{
...
}

and I need to be able to change DisplayErrors in subclasses but the compiler keeps balking an saying that DisplayErrors doesn't exist. Is there a way to do this?

wow... that code is badly written...

 

[Ryland]

Luckily it was not written by me but by another company. I just get stuck dealing with it.