A Tour of Go - Exercise: Readers

Exercise-Readers.go

package main

import (
	"golang.org/x/tour/reader"
)

type MyReader struct{}

// TODO: Add a Read([]byte) (int, error) method to MyReader.
func (reader MyReader) Read(b []byte) (int, error) {
	size := len(b)
    for i := range b { b[i] = 'A' }  // 'A': rune for "A"
	return size, nil
}

func main() {
	reader.Validate(MyReader{})
}