[Maxima] "guarded" fetch from hashed array
villate at fe.up.pt
Tue Feb 7 11:52:49 CST 2012
On 02/07/2012 04:38 PM, Edd Barrett wrote:
> I wish to use a hash table to store a mapping from a variable name to a
> list of coefficients. This is accomplished easily enough in maxima,
> however, is there a way of throwing an error if the key accessed is not
> a key in the hash table?
Have you tried with atom?
(%i2) hash[a]: "aaa"$
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