returning result from a function when the number of items in the result varies

[Trevor DeVore]

On Sep 22, 2008, at 12:26 AM, Ken Ray wrote:

> Has an element in an array been defined yet?
> ------------------------------------------------------------
> put <key> is among the lines of (the keys of <arrayVariable>)
>    -> "true" if it has been defined, "false" if it has not been  
> defined

One additional note - as of Rev 2.9 you can also say:

put <key> is among the keys of <arrayVariable)

Regards,

-- 
Trevor DeVore
Blue Mango Learning Systems
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