Is there anything fundamentally wrong with this code?

[WhatMeWorry via Digitalmars-d-learn]

On Friday, 3 February 2017 at 18:37:15 UTC, Johan Engelen wrote:
> On Friday, 3 February 2017 at 17:20:43 UTC, WhatMeWorry wrote:
>>         [...]
>
> The error is in this line. Instead of assigning to the 
> `postProc` at module scope, you are defining a new local 
> variable and assigning to it.
>
>> [...]

Thank you so much.  This is where I deserve a big Duh.  I guess 
there is no way to to make this idiot proof.  I'll print it out 
and hang it over my desk.