using System.Xml.Linq; // XDocument
using System; // String
using Packt.Shared; // IsValidHex(), IsValidXmlTag(), IsValidPassword()
using DialectSoftware.Collections;
using DialectSoftware.Collections.Generics;

XDocument doc = new();

string s1 = "Hello";
String s2 = "World";
WriteLine($"{s1} {s2}");

Write("Enter a color value in hex: ");
string? hex = ReadLine(); // or "00ffc8"
WriteLine("Is {0} a valid color value? {1}",
  arg0: hex, arg1: hex.IsValidHex());

Write("Enter a XML element: ");
string? xmlTag = ReadLine(); // or "<h1 class=\"<\" />"
WriteLine("Is {0} a valid XML element? {1}",
  arg0: xmlTag, arg1: xmlTag.IsValidXmlTag());

Write("Enter a password: ");
string? password = ReadLine(); // or "secretsauce"
WriteLine("Is {0} a valid password? {1}",
  arg0: password, arg1: password.IsValidPassword());

Axis x = new("x", 0, 10, 1);
Axis y = new("y", 0, 4, 1);
Matrix<long> matrix = new(new[] { x, y });

for (int i = 0; i < matrix.Axes[0].Points.Length; i++)
{
  matrix.Axes[0].Points[i].Label = "x" + i.ToString();
}

for (int i = 0; i < matrix.Axes[1].Points.Length; i++)
{
  matrix.Axes[1].Points[i].Label = "y" + i.ToString();
}

foreach (long[] c in matrix)
{
  matrix[c] = c[0] + c[1];
}

foreach (long[] c in matrix)
{
  WriteLine("{0},{1} ({2},{3}) = {4}",
    matrix.Axes[0].Points[c[0]].Label,
    matrix.Axes[1].Points[c[1]].Label,
    c[0], c[1], matrix[c]);
}