encoding/binary: make new example a bit more idiomatic

Mainly get rid of the weird zero-value struct literal,
but while we're here also group and order things a bit better:
first the reader, then the data, then the call (which takes reader then data).

Change-Id: I901b0661d85d8eaa0807e4482aac66500ca996c7
Reviewed-on: https://go-review.googlesource.com/78118
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>

diff --git a/src/encoding/binary/example_test.go b/src/encoding/binary/example_test.go
index e99aef288d3ccf28d237707b03e9e3f1b312fbea..6f892c2b8d301a07fe524b35d19e0c4159adc49f 100644 (file)
--- a/src/encoding/binary/example_test.go
+++ b/src/encoding/binary/example_test.go
@@ -52,18 +52,20 @@ func ExampleRead() {
 }
 
 func ExampleRead_multi() {
-       data := struct {
+       b := []byte{0x18, 0x2d, 0x44, 0x54, 0xfb, 0x21, 0x09, 0x40, 0xff, 0x01, 0x02, 0x03, 0xbe, 0xef}
+       r := bytes.NewReader(b)
+
+       var data struct {
                PI   float64
                Uate uint8
                Mine [3]byte
                Too  uint16
-       }{}
-       b := []byte{0x18, 0x2d, 0x44, 0x54, 0xfb, 0x21, 0x09, 0x40, 0xff, 0x01, 0x02, 0x03, 0xbe, 0xef}
-       buf := bytes.NewReader(b)
-       err := binary.Read(buf, binary.LittleEndian, &data)
-       if err != nil {
+       }
+
+       if err := binary.Read(r, binary.LittleEndian, &data); err != nil {
                fmt.Println("binary.Read failed:", err)
        }
+
        fmt.Println(data.PI)
        fmt.Println(data.Uate)
        fmt.Printf("% x\n", data.Mine)