Here's another, more serious, attempt (still in Ruby) :
defadd(a,b)(-a...b).sizeend
Some explanations : in Ruby 0..10 is called a range. It is really useful to make arbitrary loops or splice an array, for example. Simply, a range is a suite of values. The syntax I used here is 0...10 (note the three dots) which is an exclusive range : the suite of values goes from 0 to 9. So the trick is to have a range going from -a to b and excluding b because 0 is included in the suite.
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Here's another, more serious, attempt (still in Ruby) :
Some explanations : in Ruby
0..10is called a range. It is really useful to make arbitrary loops or splice an array, for example. Simply, a range is a suite of values. The syntax I used here is0...10(note the three dots) which is an exclusive range : the suite of values goes from0to9. So the trick is to have a range going from-atoband excludingbbecause0is included in the suite.