src := make([]byte, tt.srcLen)
			if tt.srcLen >= 2 {
				src[1] = 42
			}
			dst := js.Global().Get("Uint8Array").New(tt.dstLen)

			if got, want := js.CopyBytesToJS(dst, src), tt.copyLen; got != want {
				t.Errorf("copied %d, want %d", got, want)
			}
			if tt.dstLen >= 2 {
				if got, want := dst.Index(1).Int(), 42; got != want {
					t.Errorf("got %d, want %d", got, want)

//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname typedslicecopy
//go:nosplit
func typedslicecopy(typ *_type, dstPtr unsafe.Pointer, dstLen int, srcPtr unsafe.Pointer, srcLen int) int {
	n := dstLen
	if n > srcLen {
		n = srcLen
	}
	if n == 0 {
		return 0
	}

	// The compiler emits calls to typedslicecopy before

	cgo     bool
	alignme uint64
}

// *byte is really *runtime.Type
func typedmemmove(typ *byte, dst *any, src *any)
func typedmemclr(typ *byte, dst *any)
func typedslicecopy(typ *byte, dstPtr *any, dstLen int, srcPtr *any, srcLen int) int

func selectnbsend(hchan chan<- any, elem *any) bool
func selectnbrecv(elem *any, hchan <-chan any) (bool, bool)

func selectsetpc(pc *uintptr)

		slice := ir.NewSliceExpr(base.Pos, ir.OSLICE, s, idx, nil, nil)
		slice.SetType(s.Type())
		slice.SetBounded(true)

		ir.CurFunc.SetWBPos(n.Pos())

		// instantiate typedslicecopy(typ *type, dstPtr *any, dstLen int, srcPtr *any, srcLen int) int
		fn := typecheck.LookupRuntime("typedslicecopy", l1.Type().Elem(), l2.Type().Elem())
		ptr1, len1 := backingArrayPtrLen(cheapExpr(slice, &nodes))
		ptr2, len2 := backingArrayPtrLen(l2)

	if _, err := s.sr.Seek(0, io.SeekStart); err != nil {
		return nil, err
	}
	var stlen uint32
	var stoff uint64
	var nsyms uint32
	var symoff uint64
	switch f.TargetMachine {
	case U802TOCMAGIC:
		lhdr := new(LoaderHeader32)
		if err := binary.Read(s.sr, binary.BigEndian, lhdr); err != nil {
			return nil, err
		}
		stlen = lhdr.Lstlen
		stoff = uint64(lhdr.Lstoff)
		nsyms = lhdr.Lnsyms
		symoff = LDHDRSZ_32

#include "textflag.h"

// See memmove Go doc for important implementation constraints.

// Register map
//
// dstin  R0
// src    R1
// count  R2
// dst    R3 (same as R0, but gets modified in unaligned cases)
// srcend R4
// dstend R5
// data   R6-R17
// tmp1   R14

// Copies are split into 3 main cases: small copies of up to 32 bytes, medium

				t.Fatalf("failed to write C source file: %v", err)
			}

			dstBin := dir.Join(name)
			cmd, err := cc(config.cFlags...)
			if err != nil {
				t.Fatal(err)
			}
			cmd.Args = append(cmd.Args, config.ldFlags...)
			cmd.Args = append(cmd.Args, "-o", dstBin, cSrc, lib)
			mustRun(t, cmd)

			cmd = hangProneCmd(dstBin)
			replaceEnv(cmd, "LD_LIBRARY_PATH", ".")
			mustRun(t, cmd)
		})
	}

		// i.e. a map with `_1` as key and value as the
		// non-object.
		kvs = jstream.KVS{jstream.KV{Key: "_1", Value: v.Value}}
	}

	dstRec, ok := dst.(*Record)
	if !ok {
		dstRec = &Record{}
	}
	dstRec.KVS = kvs
	dstRec.SelectFormat = sql.SelectFmtJSON
	return dstRec, nil
}

// Close - closes underlying reader.
func (r *Reader) Close() error {
	// Close the input.
	err := r.readCloser.Close()

		for i := range r.columnNames {
			r.nameIndexMap[r.columnNames[i]] = int64(i)
		}
	}
	dstRec, ok := dst.(*Record)
	if !ok {
		dstRec = &Record{}
	}
	dstRec.columnNames = r.columnNames
	dstRec.csvRecord = csvRecord
	dstRec.nameIndexMap = r.nameIndexMap

	return dstRec, nil
}

// Close - closes underlying reader.
func (r *Reader) Close() error {
	if r.close != nil {

Die Daten werden darum mit einem „neuen“ `tax`-Wert von `10.5` abgespeichert.

## Teilweises Ersetzen mit `PATCH`

Sie können auch die <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PATCH" class="external-link" target="_blank">HTTP `PATCH`</a> Operation verwenden, um Daten *teilweise* zu ersetzen.

Das bedeutet, sie senden nur die Daten, die Sie aktualisieren wollen, der Rest bleibt unverändert.