One of the oop of Ruby Way

1 Using multiple construction methods

There are no constructors in Ruby like C + + or Ruby, but we can still create a similar number of constructors:

Ruby Code

Class Coloredrectangle
def initialize (R, G, B, S1, S2) @r, @g,
@b, @s1, @s2 = R, G, B, S1, S2
End
def coloredrectangle.white_rect (S1, S2)
new (0xFF, 0xFF, 0xFF, s1, S2)
end
def Coloredr Ectangle.gray_rect (S1, S2)
new (0x88, 0x88, 0x88, s1, S2)
end
def Coloredrectangle.colored_squa　Re (r, G, B, s)
new (R, G, B, S, s)
end
def coloredrectangle.red_square (s)
new (0xFF, 0, 0, S, s)
end
def inspect
"#@r #@g #@b # @s1 # @s2 '
end
a = Coloredrectang Le.new (0x88, 0xaa, 0xFF, m)
B = Coloredrectangle.white_rect (15,25)
C = Coloredrectangle.red_square (40)