macro
boot.janet on line 193, column 1
(unless condition & body)
Shorthand for `(when (not condition) ;body)`.
(let [x false]
(var y 0)
(unless x
(++ y)
(++ y))
y)
# => 2
(let [x 10]
(unless (= x 10)
(print "x is not 10!")
)
)
# => nil
(let [x 5]
(unless (= x 10)
(print "x is not 10!")
)
)
# => "x is not 10!"