試験ACD101 トピック5 問題34 スレッド

Given that ri!name is defined as "Maria" and ri!directory contains two a!map() structures, one of which includes the name "Maria," the expression wherecontains(ri!name, index(ri!directory, "name")) will evaluate as follows: The index() function will return a list of values from ri!directory for the key "name," which will be {"Maria", "Steven"}. The wherecontains() function will then check where "Maria" is found within this list. Since "Maria" is the first element, the function will return a list of indices where "Maria" is found, in this case, {1}. Appian lists are 1-indexed, so the first position is represented by 1, not 0.
Reference: Appian Expression Language Documentation - Functions