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
}

katuday:

> I am very new to D.

Welcome to D :-)


> 	alias the_row = string[];
> 	alias the_table = the_row[];

Here you are defining two types (and in D idiomatically types are written in CamelCase, so TheRow and TheTable).


> 	File inFile = File("account.txt", "r");

This is enough:

auto inFile = File("account.txt", "r");


> 	while (!inFile.eof())
> 	{
> 		string row_in = chomp(inFile.readln());

This should be better (untested):

foreach (rawLine; inFile.byLine) {
    auto row = rawLine.chomp.idup.split("\t");


> 		the_table ~= row_out; //Error: string[][] is not an lvalue

theTable is not a variable, it's a type, so you need to define it like this:

string[][] table;

Bye,
bearophile

On Saturday, 7 June 2014 at 17:04:36 UTC, bearophile wrote:
> katuday:
>
>> I am very new to D.
>
> Welcome to D :-)
>
>
>> 	alias the_row = string[];
>> 	alias the_table = the_row[];
>
> Here you are defining two types (and in D idiomatically types are written in CamelCase, so TheRow and TheTable).
>
>
>> 	File inFile = File("account.txt", "r");
>
> This is enough:
>
> auto inFile = File("account.txt", "r");
>
>
>> 	while (!inFile.eof())
>> 	{
>> 		string row_in = chomp(inFile.readln());
>
> This should be better (untested):
>
> foreach (rawLine; inFile.byLine) {
>     auto row = rawLine.chomp.idup.split("\t");
>
>
>> 		the_table ~= row_out; //Error: string[][] is not an lvalue
>
> theTable is not a variable, it's a type, so you need to define it like this:
>
> string[][] table;
>
> Bye,
> bearophile

Thank you.