A Tour of Go - Exercise: Reader

exercise-reader.go

// https://tour.golang.org/methods/22
package main

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

type MyReader struct{}

func (r MyReader) Read(b []byte) (int, error) {
	for i := range b {
		b[i] = 65
	}
	return len(b), nil
}

/* Shortest solution that validates
func (r MyReader) Read(b []byte) (int, error) {
	b[0] = 65
	return 1, nil
}
*/

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