:: This is in dojo:
=week1 |=(a=@ (@ub a))
(week1 5)
0b101

:: This is a hoon script:
!:
::  Week 1 of hoon school 101
::
::::  /hoon/week1/gen
::
::
::::
::
:-  %say
|=  [* [a=@ ~] ~]
:-  %noun
(@ub a)

:: Calling from dojo as:
+week1 5