[Tutor] Pass By Reference

[Bill Mill]

On Apr 12, 2005 12:20 PM, Gooch, John <John.Gooch at echostar.com> wrote:
>  
> I have a class named 'Dir' that I want to be put into another class
> 'DirList' ( essential a linked list of Dir objects ) using the 'insert()'
> method. The syntax is 'DirList.insert( Dir )' which works, but then I try to
> access the 'getSize()' function of the 'Dir' class from *inside* of the
> DirList class, it gives me this -> 
>     'I added a node for dir d:/ with size <bound method Dir.getSize of
> <__main__.Dir instance at 0x00E18CD8>>' 
>   
> Any ideas on what I am doing wrong? 
>   

1) Linked lists are almost always worthless in python. Why not use a
list instead?

2) what's being printed is a function reference - i.e. you're doing:

self.a_dir_instance.getSize

instead of:

self.a_dir_instance.getSize()

which actually calls the function, instead of just returning a pointer to it.

Peace
Bill Mill
bill.mill at gmail.com