Method definition usage analysis in the Go language

This article illustrates method definitions in the Go language as an example. Share with you for your reference. The specific analysis is as follows:

In fact, you can define any method for any type in a package, not just a structure.
You cannot define methods for types or base types from other packages.

package main

import (

    "fmt"

    "math"

)

type MyFloat float64

func (f MyFloat) Abs() float64 {

    if f < 0 {

        return float64(-f)

    }

    return float64(f)

}

func main() {

    f := MyFloat(-math.Sqrt2)

    fmt.Println(f.Abs())

}

I hope this article has been helpful to your programming of Go language.