[thelist] exiting out of a function using a nested function

[Michael Mell]

return false from checkData(), check the return value in init().

Tom Dell'Aringa wrote:

>
> function init()
> {
>     if (not checkData()) {   // <-- checking to see if the data is
> present

           return false; // or do whatever to bail out
   }

>
>    statements
>    statements
>    statements
> }

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