contains

Syntax	expression1 contains expression2
Action	Evaluates both expressions as strings, and determines whether the result of expression1 contains the result of expression2. If expression1 produces a list or record, expression2 is evaluated as a list or record and the comparison is done on that basis rather than as strings.
Examples	"The quick brown fox" contains "quick"    » true string.dateString () contains "Fri"    » true Thank God it's Friday! 1234 contains 23    » true The numbers are converted to strings for this operation. {1, 2, 3, 4} contains 3    » true The number 3 is converted to a list, and the comparison results in true. {1, 2, 3, 4} contains {2, 4}    » false The first list contains the numbers 2 and 4, but not the list {2, 4} in sequence. {"smoke": true, "fire": false, "heat": true} contains {"fire": false, "smoke": true}    » true See Notes.
Notes	The contains operator is case-sensitive; upper-case characters do not match lower-case ones. When applied to record values, the contains operator is not order-sensitive. It results in a true value as long as each item in the second record is contained in the first record and has the same value.
See Also	beginsWith endsWith string.patternMatch