Main

Author: dsamarin

main.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"fmt"
+)
+
+type Dataset struct {
+	n int
+	avgXY float64
+	avgX float64
+	avgY float64
+	avgX2 float64
+}
+
+func (d *Dataset) Add(x float64, y float64) {
+	fmt.Print("Add: {", x, ", ", y, "}\n")
+
+	if d.n == 0 {
+		d.avgXY = x * y
+		d.avgX = x
+		d.avgY = y
+		d.avgX2 = x * x
+	} else {
+		nn := float64(d.n + 1)
+		fac := float64(d.n) / nn
+		d.avgXY = fac * d.avgXY + (x*y)/nn
+		d.avgX  = fac * d.avgX  + (x) / nn
+		d.avgY  = fac * d.avgY  + (y) / nn
+		d.avgX2 = fac * d.avgX2 + (x*x)/nn
+	}
+
+	d.n++
+}
+
+func (d *Dataset) SlopeIntercept() (float64, float64) {
+	m := (d.avgXY - (d.avgX * d.avgY)) /
+		(d.avgX2 - d.avgX * d.avgX)
+	b := d.avgY - m * d.avgX
+	return m, b
+}
+
+func main() {
+
+	// y = mx + b
+	secretM := 2.45
+	secretB := 19.234
+
+	dataset := Dataset{}
+	for i := 1.0; i <= 10.0; i += 1.0 {
+		dataset.Add(i, secretM * i + secretB)
+	}
+
+	fmt.Println(dataset.SlopeIntercept())
+
+	fmt.Println("Hello, world")
+}