Update README.md and add examples/ directory

README.md

@@ -20,6 +20,15 @@ b: int = 0;
 c: str; // declared, but not yet assigned
 ```
 
+## Expressions
+
+```
+a: int = 34;
+b: int = 35;
+c: int = 1;
+d: int = a + b * c; // with correct operator precedence
+```
+
 ## Structs
 
 ```
@@ -29,10 +38,10 @@ struct MyStruct {
 	field3: SomeOtherStruct
 }
 
-my_struct: MyStruct = MyStruct{
+my_struct: MyStruct = MyStruct.{
 	field1=1,
 	field2="Hello, World!",
-	field3=SomeOtherStruct{...} // whatever SomeOtherStruct takes
+	field3=SomeOtherStruct.{...} // whatever SomeOtherStruct takes
 };
 
 my_struct.field1 = 2;
@@ -55,12 +64,12 @@ enum Weekday {
 day: Weekday = Weekday.Tuesday;
 
 match day in {
-	case Monday do { ... }
+	case Monday    { ... } // handle Monday
-	case Tuesday do { ... }
+	case Tuesday   { ... } // handle Tuesday
-	case Wednesday do { ... }
+	case Wednesday { ... } // and so on...
-	case Thursday do { ... }
+	case Thursday  { ... }
-	case Friday do { ... }
+	case Friday    { ... }
-	case _ do { ... } // default
+	case _         { ... } // default
 }
 ```
 or
@@ -73,8 +82,8 @@ enum IntResult {
 result: IntResult = IntResult.Ok(5);
 
 match result in {
-	case Ok(num) do { ... } // num is defined in this scope
+	case Ok(num) { ... } // num is defined in this scope
-	case Err(err) do { ... } // similarly err is defined in this scope
+	case Err(err) { ... } // similarly err is defined in this scope
 }
 ```
 Currently, polymorphic structs/enums are not supported, however I plan to eventually do so.
@@ -98,10 +107,28 @@ the_min: int = min(5, 10);
 
 ## Arrays
 
+```
+numbers: int[] = [:int, 0, 1, 2, 3, 4]; // array literal must state element type (for now)
+numbers = [:int, 2*x for x in numbers]; // list comprehension must also (for now)
+```
+
 ## For loops
 
+```
+// prints numbers 0-9
+for i in range(0, 10) {
+	print(int_to_str(i)+"\n");
+}
+```
+
 ## While loops
 
+a: int = 0;
+while a < 10 {
+	print(int_to_str(a)+"\n");
+	a = a + 1;
+}
+
 ## Reading files
 
 ## Importing

examples/numbers.ppp

@@ -0,0 +1,5 @@
+numbers: int[] = [:int, 0, 1, 2, 3, 4, 5];
+
+numbers = [:int, 2*x for x in numbers];
+
+for number in numbers print(int_to_str(number)+"\n");

examples/person.ppp

@@ -0,0 +1,11 @@
+struct Person {
+	age: int,
+	name: str
+}
+
+my_person: Person = Person.{
+	age=50,
+	name="Hello, World"
+};
+
+print(int_to_str(my_person.age)+" "+my_person.name+"\n");

examples/weekday.ppp

@@ -0,0 +1,21 @@
+enum Weekday {
+	Monday,
+	Tuesday,
+	Wednesday,
+	Thursday,
+	Friday,
+	Saturday,
+	Sunday
+}
+
+day: Weekday = Weekday.Monday;
+
+match day {
+	case Monday print("It's Monday!\n");
+	case Tuesday print("It's Tuesday!\n");
+	case Wednesday print("It's Wednesday!\n");
+	case Thursday print("It's Thursday!\n");
+	case Friday print("It's Friday!\n");
+	case Saturday print("It's Saturday!\n");
+	case Sunday print("It's Sunday!\n");
+}