RosettaCodeData/Task/Apply-a-callback-to-an-array/Ballerina/apply-a-callback-to-an-array.ballerina

import ballerina/io;

public function main() {
    int[] a = from int i in 1...10 select i;
    var square = function(int i) returns int {
        return i * i;
    };
    io:println(a.map(i => square(i)));
}