is in, is not in, isn't in

• operator

• a is in b -- is equivalent to: b contains a

• Tests whether a string is contained in another string, whether a value is one of the items in a list of values, or whether a list of values is a sublist in another list.

• Examples: +

   put "love" is in "clover" —> True

   put 13 isn't in [12,44,132,66] —> True

   put [6,8] is in [2,4,6,8,99] —> True

   put [6,8] is in [2,4,6,7,8,99] —> False

• Related: contains , within