[SOLVED] DSRN (dog slow roman numerals)

[Thomas Klemm]

(06-15-2014 01:22 AM)Claudio L. Wrote:  I found that behavior when implementing \GSLIST and it didn't make any sense.

Look at it as: \<< + \>> STREAM
What happens when you execute + with only one number on the stack?
Error: Too Few Arguments

Quote:The sum of an empty list should give an error, but a list with one element has a clear result.

Or then the sum of an empty list is 0 as in Lisp.
And the product of an empty list is 1.

Code:

 > (+ 3 4)
=> 7
 > (+ 3)
=> 3
 > (+)
=> 0
 > (* 3 4)
=> 12
 > (* 3)
=> 3
 > (*)
=> 1

Cheers
Thomas