ruby array has element
>> ['Cat', 'Dog', 'Bird'].include? 'Dog'
=> trueruby array has element
>> ['Cat', 'Dog', 'Bird'].include? 'Dog'
=> trueruby in array
You can just use a set difference (aka minus) to see if one array includes all elements of another
not_included = [1,2,3] - (1..9).to_a
not_included # => []
not_included = [1,2,3,'A'] - (1..9).to_a
not_included # => ["A"]Copyright © 2021 Codeinu
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