On 05/12/2014 08:47 PM, InfinityPlusB wrote:
> I want to be able to name the rows, as they are built.
First, no, you cannot name variables at run time because variables are
concepts of source code; they don't exist in the compiled program.
> So when row 1 is read in I get
> int[] bob_1 = new int[0];
> when the second row is read in, I get
> int[] bob_2 = new int[0];
Well, it looks like a bob array. :) How about "naming" those rows as
bob[0], bob[1], etc.
> So at the end of running my program I effectively want bob_1, bob_2 and
> bob_3.
Would zero-indexing work?
> And then I can do something more interesting with them ...
>
> I realise this is now slightly beyond my if-then-else capabilities, and
> was wondering if I could get some direction.
I had used the same naming scheme as a segway to my arrays chapter:
http://ddili.org/ders/d.en/arrays.html
> The contents of /home/bob/test.csv
> -1, -1, 1, -1, -1
> -1, 1, 1, 1, -1
> 1, -1, -1, 1, -1
>
> My Program
> #!/usr/bin/rdmd
> import std.stdio;
> import std.array;
> import std.conv;
> import std.string;
>
> void main()
> {
> string inputFile = "/home/bob/test.csv";
> // string inputFile = "-1, -1, 1, -1, -1\n-1, 1, 1, 1, -1\n1, -1, -1,
> 1, -1\r\n";
> auto readInFile = File(inputFile);
> int count = 0;
> foreach(line; readInFile.byLine())
> {
> int[] bob = new int[0];
> // int[] bob_NUMBER_ME = new int[0];
> foreach(item;line.split(","))
> {
> writeln(strip(item));
> bob ~= to!int(strip(item));
> }
> writeln(bob);
> writefln("Line number %d", count);
> count++;
> }
> writeln("Done");
> }
Here is the inner loop with minimal changes to your program:
int[][] bob; // <== Array of arrays
foreach(line; readInFile.byLine())
{
int[] row; // <== Make a new row
foreach(item;line.split(","))
{
writeln(strip(item));
row ~= to!int(strip(item));
}
bob ~= row; // <== Add the row
writefln("Line number %d", count);
count++;
}
writeln(bob);
Ali
