Initial data commit

Task/Compound-data-type/Groovy/compound-data-type-1.groovy

@@ -0,0 +1,8 @@
+class Point {
+    int x
+    int y
+
+    // Default values make this a 0-, 1-, and 2-argument constructor
+    Point(int x = 0, int y = 0) { this.x = x; this.y = y }
+    String toString() { "{x:${x}, y:${y}}" }
+}

Task/Compound-data-type/Groovy/compound-data-type-2.groovy

@@ -0,0 +1,17 @@
+// Default Construction with explicit property setting:
+def p0 = new Point()
+assert 0 == p0.x
+assert 0 == p0.y
+p0.x = 36
+p0.y = -2
+assert 36 == p0.x
+assert -2 == p0.y
+
+// Direct Construction:
+def p1 = new Point(36, -2)
+assert 36 == p1.x
+assert -2 == p1.y
+
+def p2 = new Point(36)
+assert 36 == p2.x
+assert 0 == p2.y

Task/Compound-data-type/Groovy/compound-data-type-3.groovy

@@ -0,0 +1,19 @@
+// Explicit coersion from list with "as" keyword
+def p4 = [36, -2] as Point
+assert 36 == p4.x
+assert -2 == p4.y
+
+// Explicit coersion from list with Java/C-style casting
+p4 = (Point) [36, -2]
+println p4
+assert 36 == p4.x
+assert -2 == p4.y
+
+// Implicit coercion from list (by type of variable)
+Point p6 = [36, -2]
+assert 36 == p6.x
+assert -2 == p6.y
+
+Point p8 = [36]
+assert 36 == p8.x
+assert 0 == p8.y

Task/Compound-data-type/Groovy/compound-data-type-4.groovy

@@ -0,0 +1,31 @@
+// Direct map-based construction
+def p3 = new Point([x: 36, y: -2])
+assert 36 == p3.x
+assert -2 == p3.y
+
+// Direct map-entry-based construction
+p3 = new Point(x: 36, y: -2)
+assert 36 == p3.x
+assert -2 == p3.y
+
+p3 = new Point(x: 36)
+assert 36 == p3.x
+assert 0 == p3.y
+
+p3 = new Point(y: -2)
+assert 0 == p3.x
+assert -2 == p3.y
+
+// Explicit coercion from map with "as" keyword
+def p5 = [x: 36, y: -2] as Point
+assert 36 == p5.x
+assert -2 == p5.y
+
+// Implicit coercion from map (by type of variable)
+Point p7 = [x: 36, y: -2]
+assert 36 == p7.x
+assert -2 == p7.y
+
+Point p9 = [y:-2]
+assert 0 == p9.x
+assert -2 == p9.y