// the receiver stops reading them.
func _Ranger[Elem any]() (*_Sender[Elem], *_Receiver[Elem]) {
	c := make(chan Elem)
	d := make(chan struct{})
	s := &_Sender[Elem]{
		values: c,
		done:   d,
	}
	r := &_Receiver[Elem]{
		values: c,
		done:   d,
	}
	runtime.SetFinalizer(r, (*_Receiver[Elem]).finalize)
	return s, r
}

// A _Sender is used to send values to a Receiver.

						for i := 0; i < f.Len(); i++ {
							elem := f.Index(i)
							if !isPtr {
								elem = elem.Addr()
							}
							objs = append(objs, v)
							elems = reflect.Append(elems, elem)

							relPrimaryValues := make([]interface{}, 0, len(rel.FieldSchema.PrimaryFields))
							for _, pf := range rel.FieldSchema.PrimaryFields {
								if pfv, ok := pf.ValueOf(db.Statement.Context, elem); !ok {

			return subst.check.newAliasInstance(subst.pos, t.orig, targs, subst.ctxt)
		}

	case *Array:
		elem := subst.typOrNil(t.elem)
		if elem != t.elem {
			return &Array{len: t.len, elem: elem}
		}

	case *Slice:
		elem := subst.typOrNil(t.elem)
		if elem != t.elem {
			return &Slice{elem: elem}
		}

	case *Struct:
		if fields, copied := subst.varList(t.fields); copied {

func (mapError) Error() string { return "mapError" }

var _ error = mapError{}
var _ error = new(mapError)

func TestImplements(t *testing.T) {
	for _, tt := range implementsTests {
		xv := TypeOf(tt.x).Elem()
		xt := TypeOf(tt.t).Elem()
		if b := xv.Implements(xt); b != tt.b {
			t.Errorf("(%s).Implements(%s) = %v, want %v", TypeString(xv), TypeString(xt), b, tt.b)
		}
	}
}

var assignableTests = []struct {
	x any
	t any

    // CHECK: "tf.AssignVariableOp"(%[[BUFFER]], %[[UPDATE]])
    // CHECK: "tf.AssignVariableOp"(%[[SIZE]]
     %push = "tf.StackPushV2"(%stack, %elem) {swap_memory = false} : (tensor<!tf_type.resource>, tensor<f32>) -> tensor<f32>
    "tf.Yield"(%elem) : (tensor<f32>) -> ()
  }, {
    %elem = "tf._SomeOtherOp"() : () -> tensor<f32>
    // CHECK-NOT: tf.StackPushV2
    // CHECK: %[[BUFFER_VAL:.*]] = "tf.ReadVariableOp"(%[[BUFFER]])

		return 'array'

	def to_string(self):
		return str(self.val.type)

	def children(self):
		# see chan.c chanbuf(). et is the type stolen from hchan<T>::recvq->first->elem
		et = [x.type for x in self.val['recvq']['first'].type.target().fields() if x.name == 'elem'][0]
		ptr = (self.val.address["buf"]).cast(et)
		for i in range(self.val["qcount"]):
			j = (self.val["recvx"] + i) % self.val["dataqsiz"]

                    printf("clang");
                #elif defined(__GNUC__) && defined(__MINGW32__)
                    printf("mingw");
                #elif defined(__GNUC__) && defined(__CYGWIN__)
                    printf("gcc cygwin");
                #elif defined(__GNUC__)
                    printf("gcc");
                #elif defined(_MSC_VER)
                    printf("visual c++");
                #else

                    printf("clang");
                #elif defined(__GNUC__) && defined(__MINGW32__)
                    printf("mingw");
                #elif defined(__GNUC__) && defined(__CYGWIN__)
                    printf("gcc cygwin");
                #elif defined(__GNUC__)
                    printf("gcc");
                #elif defined(_MSC_VER)
                    printf("visual c++");
                #else

    cout << "amd64";
    #elif defined(__i386) || defined(_M_IX86)
    cout << "i386";
    #elif defined(_M_IA64)
    cout << "itanium";
    #else
    cout << "unknown";
    #endif
    cout << " ";

    #if defined(__linux__)
    cout << "linux";
    #elif defined(__APPLE__) && defined(__MACH__)
    cout << "os x";
    #elif defined(_WIN32) || defined (_WIN64) || defined (__CYGWIN__)

// allocated temporary variable of type [len]elem. This variable is
// initialized, and elem must not contain pointers.
func stackBufAddr(len int64, elem *types.Type) *ir.AddrExpr {
	if elem.HasPointers() {
		base.FatalfAt(base.Pos, "%v has pointers", elem)
	}
	tmp := typecheck.TempAt(base.Pos, ir.CurFunc, types.NewArray(elem, len))
	return typecheck.Expr(typecheck.NodAddr(tmp)).(*ir.AddrExpr)