go-learning/3methods/readers.go

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2023-07-31 10:05:18 +03:00
package main
import (
"fmt"
"io"
"strings"
)
func main() {
fmt.Println("the io package specifies io.Reader interface, which represents the end of a stream of data")
r := strings.NewReader("📩⍼ ꜜx Hello, Your Computer has virus .d")
// specifies new Reader
b := make([]byte, 4)
// think this like a bucket for temporary inputs
for {
n, err := r.Read(b)
// Read gets Reader (r) and gets next b byte in it
// returns n (number of bytes populated)
// and err (error, EOF for example)
fmt.Println(n, err, b)
fmt.Println(b[:n])
fmt.Printf("%s\n\n", b[:n])
if err == io.EOF {
break
}
}
}