UnimplementedFeatureError: Nested dynamic arrays not implemented here

Question

pragma solidity ^0.4.0;

// delete an array of names
contract ArrayDelete {
string[] names;

function main() returns (string[]) {
   names.push("Jones");
   names.push("Ama");
   names.push("Emeka");
   names.push("Owo");
   names.push("Lulu");

   delete names[0];
   return names;
 }
}

Any ideas why this error occurs? None of the answers on similar questions was helpful in fixing this.

Answer 1

You can't return a dynamic array of dynamic arrays from a Solidity function. From the Solidity docs:

Is it possible to return an array of strings (string[]) from a Solidity function?

Not yet, as this requires two levels of dynamic arrays (string is a dynamic array itself).