Transforms elements in an array in expr using the function func.
Syntax
transform(expr,func)
Arguments
expr: An ARRAY expression.
func: A lambda function.
Returns
An ARRAY of the type of the lambda function’s result.
The lambda function must have 1 or 2 parameters.
The first parameter represents the element, the optional second parameter represents the index of the element.
The lambda function produces a new value for each element in the array.