Discussion on: I'm Go Backend developer and love it, Ask Me Anything!

[Bregy Malpartida]

Following godoc of this function, Math.Round rounded any float to the nearest integer, rounding half away from zero (golang.org/pkg/math/#Round) and this function only exist from Go 1.10. If you want another more complex unit to round you can implement it.

func Round(x, unit float64) float64 {
    return math.Round(x/unit) * unit
}

fmt.Println(Round(12.3456, 0.01)) // 12.35 
fmt.Println(Round(0.363636, 0.01)) // 0.35
fmt.Println(Round(1.922636, 0.01)) // 1.92

You can round float and obteing a string without function Round, if you want you can convert your string to float later.

s := fmt.Sprintf("%.2f", 12.3456) // s == "12.35"

Here there good references
yourbasic.org/golang/round-float-2...
yourbasic.org/golang/round-float-t...