join function
Joins the elements of an array into a single string using the specified separator.
If the array is null or empty, returns the array itself.
Parameters: array (List): The array to join. takeVal (dynamic): The separator to use in joining the elements.
Returns: String: The joined string, or the original array if it's null or empty.
Implementation
String join(List array, dynamic takeVal) {
if (array.isNotEmpty && !isNullOrBlank(array)) {
return array.join(takeVal);
}
return array.toString();
}