"guarded" fetch from hashed array

• Subject: "guarded" fetch from hashed array
• From: Edd Barrett
• Date: Tue, 7 Feb 2012 23:26:23 +0000

On Tue, Feb 07, 2012 at 01:34:58PM -0800, Richard Fateman wrote:
> Here is how you make all non-entries produce an error.
> hash[x]:= error("ERROR ", x);

Perfect! Many thanks

-- 
Best Regards
Edd Barrett

http://www.theunixzoo.co.uk

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