token = token[:copy(token[:base64BufferSize], tokenStr)]

	signer, err := ParseUnverifiedStandardClaims(token, claims, *bufp)
	if err != nil {
		return err
	}

	i := bytes.LastIndexByte(token, '.')
	if i < 0 {
		return jwtgo.ErrSignatureInvalid
	}

	n, err := base64DecodeBytes(token[i+1:], *bufp)
	if err != nil {
		return err
	}
	borrow := signer.HashBorrower()

	// Output:
	// 5
	// 3
	// -1
}

func ExampleLastIndexByte() {
	fmt.Println(bytes.LastIndexByte([]byte("go gopher"), byte('g')))
	fmt.Println(bytes.LastIndexByte([]byte("go gopher"), byte('r')))
	fmt.Println(bytes.LastIndexByte([]byte("go gopher"), byte('z')))
	// Output:
	// 3
	// 8
	// -1
}

func ExampleLastIndexFunc() {

		lc.SetPredictionHeaders(w, objInfo.ToLifecycleOpts())
	}

	if v, ok := objInfo.UserDefined[ReservedMetadataPrefix+"compression"]; ok {
		if i := strings.LastIndexByte(v, '/'); i >= 0 {
			v = v[i+1:]
		}
		w.Header()[xhttp.MinIOCompressed] = []string{v}
	}

	return nil

		return len(s)
	case n == 1:
		return bytealg.LastIndexByte(s, sep[0])
	case n == len(s):
		if Equal(s, sep) {
			return 0
		}
		return -1
	case n > len(s):
		return -1
	}
	return bytealg.LastIndexRabinKarp(s, sep)
}

// LastIndexByte returns the index of the last instance of c in s, or -1 if c is not present in s.
func LastIndexByte(s []byte, c byte) int {
	return bytealg.LastIndexByte(s, c)
}

pkg archive/zip, method (*Writer) SetOffset(int64)
pkg bufio, method (*Reader) Discard(int) (int, error)
pkg bufio, method (ReadWriter) Discard(int) (int, error)
pkg bytes, func LastIndexByte([]uint8, uint8) int
pkg bytes, method (*Buffer) Cap() int
pkg bytes, method (*Reader) Size() int64
pkg crypto, const SHA512_224 = 14
pkg crypto, const SHA512_224 Hash
pkg crypto, const SHA512_256 = 15
pkg crypto, const SHA512_256 Hash

// This is an O(N*N) operation if there is no parent or it cannot be guessed.
func (d *dataUsageCache) searchParent(h dataUsageHash) *dataUsageHash {
	want := h.Key()
	if idx := strings.LastIndexByte(want, '/'); idx >= 0 {
		if v := d.find(want[:idx]); v != nil {
			_, ok := v.Children[want]
			if ok {
				found := hashPath(want[:idx])
				return &found
			}
		}
	}
	for k, v := range d.Cache {

		{"zabcdefabcdef", "z", 0},                 // first byte
		{"a☺b☻c☹d", "b", len("a☺")},               // non-ascii
	}
	for _, test := range testCases {
		actual := LastIndexByte([]byte(test.a), test.b[0])
		if actual != test.i {
			t.Errorf("LastIndexByte(%q,%c) = %v; want %v", test.a, test.b[0], actual, test.i)
		}
	}
}

// test a larger buffer with different sizes and alignments
func TestIndexByteBig(t *testing.T) {