typo. also theta => radius (rusty math)

Author: dwarring

examples/rubyish/t/inheritance.t

@@ -11,7 +11,7 @@ class Point
   def x; @x ; end
   def y; @y ; end
 
-  def theta; (x * @x  +  y * @y) ** 0.5; end
+  def radius; (x * @x  +  y * @y) ** 0.5; end
 end
 
 class Point3D < Point
@@ -23,7 +23,7 @@ class Point3D < Point
 
   def z; @z ; end
 
-  def theta; (x * @x  +  y * @y  +  z * @z) ** 0.5; end
+  def radius; (x * @x  +  y * @y  +  z * @z) ** 0.5; end
 end
 
 obj_2d = Point.new(10, 20)
@@ -32,12 +32,12 @@ obj_3d = Point3D.new(15, 25, 35)
 puts "#{obj_2d.x == 10 ? 'ok' : 'nok'} 4 - 2d obj x"
 puts "#{obj_2d.y == 20 ? 'ok' : 'nok'} 5 - 2d obj y"
 
-t2 = obj_2d.theta
-puts "#{t2 > 22 && t2 < 23 ? 'ok' : 'nok'} 6 - theta 2d (approx)"
+t2 = obj_2d.radius
+puts "#{t2 > 22 && t2 < 23 ? 'ok' : 'nok'} 6 - radius 2d (approx)"
 
 puts "#{obj_3d.x == 15 ? 'ok' : 'nok'} 7 - 3d obj x"
 puts "#{obj_3d.y == 25 ? 'ok' : 'nok'} 8 - 3d obj y"
 puts "#{obj_3d.z == 35 ? 'ok' : 'nok'} 9 - 3d obj z"
 
-t3 = obj_3d.theta
-puts "#{t3 > 45 && t2 < 46 ? 'ok' : 'nok'} 10 - theta 3d (approx)"
+t3 = obj_3d.radius
+puts "#{t3 > 45 && t3 < 46 ? 'ok' : 'nok'} 10 - radius 3d (approx)"