shapes-using-methods

README

shapes-using-methods example

Calculating the area and perimeter of circles, rectangles and triangles using methods.

This example is done using,

• shapes-using-functions
• shapes-using-methods (This example)
• shapes-using-interfaces

GitHub Webpage

OVERVIEW

This is pretty straight forward using methods. It is very similar to using functions except we're using a function receiver type. Refer to code.

As you can see its similar to a function,

// Get the shape properties
c1Area := c1.circleArea()
c1Perimeter := c1.circlePerimeter()
r1Area := r1.rectangleArea()
r1Perimeter := r1.rectanglePerimeter()
t1Area := t1.triangleArea()
t1Perimeter := t1.trianglePerimeter()

You could argue there is no advantage and you'll be right. But with interfaces, you can reduce the function name to just area() and parameter(). See interface example.

RUN

go run shapes-using-methods.go