tracking variable value changes

[Arnaud Delobelle]

On 8 December 2011 21:50, Ian Kelly <ian.g.kelly at gmail.com> wrote:

> You can get the same effect with a float by putting it in a container
> object and binding both variables to the same container objects rather
> than to the float directly.  Then, to change the value, change the
> contents of the container object.  What you use as a container object
> is up to you.  Some use a 1-element list, although I find that ugly.

This kind of trick is not often necessary anyway.  It may be a sign
that there is a better approach to the problem that the OP is trying
to solve.

-- 
Arnaud