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- :: Hoon 101: Assignment 3a. Comment each line of code to tell the reader what the code is doing.
- :: Comments should be written as "breathing comments" as suggested in the Hoon Style Guide: https://urbit.org/docs/learn/hoon/style/
-
- :: create a gate, with the sample @ud, given the face n
- ::
- |= n=@ud
- :: attach a 't' faced @ud to the subject, with the value 1
- ::
- =/ t=@ud 1
- :: create and execute a gate, such that we can recurse back to this point
- ::
- |-
- :: if n is 1, return the next child, otherwise the one after
- ::
- ?: =(n 1)
- :: at the end, return our total
- ::
- t
- :: otherwise recurse with n minus one,
- :: and t multiplied by n. note t is
- :: not reset with the recurse, as it
- :: is attached before our recurse point
- ::
- $(n (dec n), t (mul t n))
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