arrayGetMetadata

// Create an array
arrayList = ["apple", "pineapple", "mango"];

// Fetch meta data
data = arrayGetMetadata(arrayList);

// Print array type
writeOutput(data.type);

Expected Result: synchronized

// Create an array
arrayList = ["apple", "pineapple", "mango"];

// Fetch meta data
data = arrayList.getMetadata();

// Print array type
writeOutput(data.type);

Expected Result: synchronized

CF 2018+ Return struct has a new key called dimensions and can also have a defined datatype. Supported datatypes are String, Numeric, Boolean, Date, Array, Struct, Query, Component, [Component name], Binary, and Function.

arr = arrayNew['String'](1);
writeOutput(serializeJson(arr.getMetadata()));

Expected Result: {"dimensions":1,"datatype":"String","type":"synchronized"}