Go slice can be explored beyond its len, up to its cap

README.md

The content of a Go slice can be explored beyond its len, up to its cap.

See https://go.dev/play/p/e4jrZdQhpcP

A good reason for not exposing slices beyond their length and use "full slices expressions" to constrain the capacity when exposing internal data.

main_test.go

// Demonstrates that the content of a slice beyond its current len can be retrieved up to its cap.
package main

import "testing"

func Test(t *testing.T) {
	a := []byte("abcdef")
	b := a[:3]
	c := b[len(b):cap(b)]
	t.Logf("a=%s, b=%s, c=%s\n", a, b, c)
}