Re: try/finally

[Mike Miller]

On Wed, Mar 20, 2019 at 22:42:40 -0400, Andrew Janke wrote:
> On 3/20/19 10:32 PM, John W. Eaton wrote:
> > On 3/20/19 5:39 PM, Andrew Janke wrote:
> > 
> > > Matlab has neither try/catch nor unwind_protect, so compatibility is
> > > not an immediate concern. And I think they're more likely to add a
> > > finally than an unwind_protect.
> > Matlab does have try/catch:
> > 
> >    https://www.mathworks.com/help/matlab/ref/try.html
> 
> Sorry, I meant "Matlab doesn't have try/finally".

I know it's kind of like reading backwards, but using onCleanup might be
a simpler solution than nesting a try-catch inside of an unwind_protect:

    finally = onCleanup (@() … clean up or restore something … );
    try
      ##  main code
    catch
      ##  handle errors
    end_try_catch
    clear finally   ## force immediate execution? or just return

Doesn't work that well if your finally needs access to local variables
that may be changing inside the try block, but may be useful.

-- 
mike