scott <sco### [at] laptopcom> wrote:
> You made it simpler, I can make the first one simpler too :-)

> 1. If LIST is not the empty list, then SUM(LIST) is defined as the result of 
> adding up the value at each node of LIST

  I can make it even simpler:

1. SUM(LIST) = the sum of the values of all nodes in LIST

  In some imperative languages that can be written as something along the
lines of:

sum = 0;
foreach(element in list) sum += element;

  (In some languages even the first line can be omitted if its default
behavior is that undeclared integral variables are automatically created
and initialized to 0.)

-- 
                                                          - Warp

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