How to add elements to dynamic array of dynamic array

[katuday via Digitalmars-d-learn]

I am very new to D. How do I add elements to a dynamic array of 
dynamic array.

This is my code that fails to compile.

void ex1()
{
	alias the_row = string[];
	alias the_table = the_row[];
	
	File inFile = File("account.txt", "r");
	while (!inFile.eof())
	{
		string row_in = chomp(inFile.readln());
		string[] row_out = split(row_in,"\t");
		the_table ~= row_out; //Error: string[][] is not an lvalue
	}
	writeln(the_table.length); // Error: string[][] is not an 
expression
}