a[j+1] = b[j+1]
		}
	}
}

func BenchmarkCompareBytesEqual(b *testing.B) {
	b1 := []byte("Hello Gophers!")
	b2 := []byte("Hello Gophers!")
	for i := 0; i < b.N; i++ {
		if Compare(b1, b2) != 0 {
			b.Fatal("b1 != b2")
		}
	}
}

func BenchmarkCompareBytesToNil(b *testing.B) {
	b1 := []byte("Hello Gophers!")
	var b2 []byte
	for i := 0; i < b.N; i++ {
		if Compare(b1, b2) != 1 {

<p>
For example, in this program:
</p>

<pre>
var a string

func f() {
	print(a)
}

func hello() {
	a = "hello, world"
	go f()
}
</pre>

<p>
calling <code>hello</code> will print <code>"hello, world"</code>
at some point in the future (perhaps after <code>hello</code> has returned).
</p>

<h3 id="goexit">Goroutine destruction</h3>

<p>

			testRemaining{1, 1},
		},
	}, {
		maker: makeReg{"hello", 5},
		tests: []testFnc{
			testRemaining{5, 5},
			testRead{5, "hello", io.EOF},
			testRemaining{0, 0},
		},
	}, {
		maker: makeReg{"hello, world", 50},
		tests: []testFnc{
			testRemaining{50, 50},
			testRead{7, "hello, ", nil},
			testRemaining{43, 43},
			testRead{5, "world", nil},

	// #include <stdio.h>
	// #include <stdlib.h>
	//
	// static void myprint(char* s) {
	//   printf("%s\n", s);
	// }
	import "C"
	import "unsafe"

	func main() {
		cs := C.CString("Hello from stdio")
		C.myprint(cs)
		C.free(unsafe.Pointer(cs))
	}

A few special functions convert between Go and C types
by making copies of the data. In pseudo-Go definitions:

	// Go string to C string

var b = make([]byte, 5)
n1 := copy(s, a[0:])            // n1 == 6, s == []int{0, 1, 2, 3, 4, 5}
n2 := copy(s, s[2:])            // n2 == 4, s == []int{2, 3, 4, 5, 4, 5}
n3 := copy(b, "Hello, World!")  // n3 == 5, b == []byte("Hello")
</pre>


<h3 id="Deletion_of_map_elements">Deletion of map elements</h3>

<p>
The built-in function <code>delete</code> removes the element with key

			testReadFrom{fileOps{""}, 0, nil},
			testReadFrom{fileOps{"a"}, 0, ErrWriteTooLong},
			testRemaining{0, 0},
		},
	}, {
		maker: makeReg{5, "hello"},
		tests: []testFnc{
			testRemaining{5, 5},
			testWrite{"hello", 5, nil},
			testRemaining{0, 0},
		},
	}, {
		maker: makeReg{5, "\x00\x00\x00\x00\x00"},
		tests: []testFnc{
			testRemaining{5, 5},

//
//	slice = append(slice, elem1, elem2)
//	slice = append(slice, anotherSlice...)
//
// As a special case, it is legal to append a string to a byte slice, like this:
//
//	slice = append([]byte("hello "), "world"...)
func append(slice []Type, elems ...Type) []Type

// The copy built-in function copies elements from a source slice into a
// destination slice. (As a special case, it also will copy bytes from a

			[]byte("foo"),
		}, {
			&Header{Name: "world", Mode: 0640, Size: int64(5)},
			[]byte("hello"),
		}},
	}, {
		"GNU",
		[]file{{
			&Header{Name: "bar", Mode: 0640, Size: int64(3), Devmajor: -1},
			[]byte("foo"),
		}, {
			&Header{Name: "world", Mode: 0640, Size: int64(5), Devmajor: -1},
			[]byte("hello"),
		}},
	}, {
		"PAX",
		[]file{{

pkg syscall (darwin-arm64), const IPPROTO_GRE = 47
pkg syscall (darwin-arm64), const IPPROTO_GRE ideal-int
pkg syscall (darwin-arm64), const IPPROTO_HELLO = 63
pkg syscall (darwin-arm64), const IPPROTO_HELLO ideal-int
pkg syscall (darwin-arm64), const IPPROTO_HMP = 20
pkg syscall (darwin-arm64), const IPPROTO_HMP ideal-int
pkg syscall (darwin-arm64), const IPPROTO_HOPOPTS = 0

pkg syscall (freebsd-arm64), const IPPROTO_GRE = 47
pkg syscall (freebsd-arm64), const IPPROTO_GRE ideal-int
pkg syscall (freebsd-arm64), const IPPROTO_HELLO = 63
pkg syscall (freebsd-arm64), const IPPROTO_HELLO ideal-int
pkg syscall (freebsd-arm64), const IPPROTO_HMP = 20
pkg syscall (freebsd-arm64), const IPPROTO_HMP ideal-int
pkg syscall (freebsd-arm64), const IPPROTO_HOPOPTS = 0