Question

How to declare a method on type float64 in Go

Answer 1

package main

import (
	"fmt"
)

type AFloat float64

func (f AFloat) Abs() float64 {
	if f < 0 {
	   return float64(-f)
	}
	return float64(f)
}

func main() {
	f := AFloat(-3.14)
	fmt.Println(f.Abs())
}

 

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