Re: Functions inhereting variables

[Ben Abbott]

On Nov 18, 2010, at 9:09 PM, Mike B. wrote:

> Hi all,
> 
> Is it possible to define a function which `inherits' variables from the scope 
> it was called from without explicity passing them for example:
> 
> function out = f( x )
>   out = x + a + b;
> endfunction
> 
> and in the main code:
> a=1
> b=2
> f( 3 ) 
> would give 6
> 
> Anonymous functions can inherit variables but they seem limited to simple 
> 1-line codes. 
> 
> Thanks,
> Mike.

Look at "evalin"

        help evalin

For your example ..

function out = f (x)
        a = evalin ("caller", "a", NaN);
        b = evalin ("caller", "b", NaN);
        out = x + a + b;
endfunction

Ben