toTypedList2<T>#
Option<List<List<T>>> toTypedList2<T>(dynamic value)
Converts a dynamic value to a typed 2-dimensional list of T, if possible.
Returns Some(List<List<T>>)
if the value is a 2D list where all elements
are of type T, or None
if the conversion fails.
Example:
final result = toTypedList2<int>([[1, 2], [3, 4]]); // Some([[1, 2], [3, 4]])