Added arrays section

vala.html.markdown

@@ -1,7 +1,7 @@
 ---
 language: vala
 contributors:
-    - ["Milo Gilad", "https://github.com/bigbash"]
+    - ["Milo Gilad", "https://github.com/Myl0g"]
 filename: LearnVala.vala
 ---
 
@@ -12,6 +12,7 @@ Vala has aspects of Java and C#, so it'll be familiar to those who know either o
 [Read more here.](https://wiki.gnome.org/Projects/Vala)
 
 ```vala
+
 // Single line comment
 
 /* Multiline
@@ -21,31 +22,73 @@ Comment */
 * Documentation comment
 */
 
-/*
-Data Types
-*/
+/* Data Types */
 
 // Vala supports the data types supported by most other programming languages.
 
 char character = 'a'
 unichar unicode_character = 'u' // 32-bit unicode character
 
-int i; // ints can also have guaranteed sizes (e.g. int64, uint64)
-uint j;
+int i = 2; // ints can also have guaranteed sizes (e.g. int64, uint64)
+uint j = -6; // Won't compile; unsigned ints can only be positive
 
 long k;
 
 short l;
 ushort m;
 
+string text = "Hello,"; // Note that the == operator will check string content
 
+string verbatim = """This is a verbatim (a.k.a. raw) string. Special characters
+(e.g. \n) are not interpreted. They may also be multiple lines long.""";
 
-/*
-Basic Syntax
-*/
+// String Templates allow for easy string formatting
+string string_template = @"$text world"; // "$text" evaluates to "Hello"
 
-// Like in C#, scope is defined using braces.
-// An object or reference is only valid between braces.
+int test = 5;
+int test2 = 10;
+string template2 = @"$(test * test2) is a number."; // Expression evaluation
 
+string template_slice = string_template[7:12]; // => "world"
+
+// Most data types have methods for parsing.
+
+bool parse_bool = bool.parse("false"); // => false
+int parse_int = int.parse("-52");
+string parse_string = parse_int.to_string();
+
+/* Basic I/O */
+
+stdout.printf(parse_string); // Prints to console
+string input = stdin.read_line(); // Gets input from console
+
+stderr.printf("Error message"); // Error printing
+
+/* Arrays */
+
+int[] int_array = new int[10]; // Array of ints with 10 slots
+int[] int_array2 = {5, 10, 15, 20}; // Can be created on-the-fly
+
+int[] array_slice = int_array2[1:3]; // Slice (copy of data)
+unowned int[] array_slice_ref = int_array2[1:3]; // Reference to data
+
+// Multi-dimensional Arrays (defined with a number of commas in the brackets)
+
+int[,] multi_array = new int[6,4]; // 6 is the number of arrays, 4 is their size
+int[,] multi_array2 = {{7, 4, 6, 4},
+                       {3, 2, 4, 6},
+                       {5, 9, 5, 1}};
+multi_array2[2,3] = 12; // 2 is the array, 3 is the index in the array
+
+struct Closet {
+  public uint shirts;
+  public uint jackets;
+}
+
+enum HouseSize {
+  SMALL,
+  MODERATE,
+  BIG
+}
 
 ```