function
boot.janet on line 1490 , column 1
(has-value? x value )
Checks if `x` contains `value` .
`x` can be a bytes , indexed , dictionary , fiber , or abstract type
with suitable `get` and `next` methods.
(defn array-difference [array-1 array-2 ]
(filter |(not (has-value? array-2 $ )) array-1 ))
(array-difference [1 2 3 4 5 ] [2 3 4 ]) # => @[1 5]