Built-in functions : first function

first function

first(T)

Takes an argument T that is a member of an enumerated type, and returns "true" if it is the first member of its type, and "false" otherwise.

Input: enumerated type member, or array of enumerated type members

Result: boolean, or array of boolean values

Examples:

If enumerated type "fruit" is defined as "apple", "grape", "banana":

first("apple") --> "true"

first(["banana", "apple", "banana"]) --> ["false", "true", "false"]

In: Contents >> Working with equations >> Functions >> Built-in functions