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io: use strings.Builder

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Change-Id: Ibab20627ccd1f79e77e3972e2bc6ca42c2c7de13
Reviewed-on: https://go-review.googlesource.com/c/go/+/428263
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
This commit is contained in:
cuiweixie 2022-09-04 18:05:12 +08:00 committed by Gopher Robot
parent c35bc69c97
commit 7c47c9773c
2 changed files with 2 additions and 3 deletions
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3
src/io/example_test.go
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@ -5,7 +5,6 @@
package io_test package io_test
import ( import (
"bytes"
"fmt" "fmt"
"io" "io"
"log" "log"
@ -239,7 +238,7 @@ func ExampleSeeker_Seek() {
func ExampleMultiWriter() { func ExampleMultiWriter() {
r := strings.NewReader("some io.Reader stream to be read\n") r := strings.NewReader("some io.Reader stream to be read\n")
var buf1, buf2 bytes.Buffer var buf1, buf2 strings.Builder
w := io.MultiWriter(&buf1, &buf2) w := io.MultiWriter(&buf1, &buf2)
if _, err := io.Copy(w, r); err != nil { if _, err := io.Copy(w, r); err != nil {

2
src/io/multi_test.go
View File

@ -228,7 +228,7 @@ func TestMultiReaderCopy(t *testing.T) {
// Test that MultiWriter copies the input slice and is insulated from future modification. // Test that MultiWriter copies the input slice and is insulated from future modification.
func TestMultiWriterCopy(t *testing.T) { func TestMultiWriterCopy(t *testing.T) {
var buf bytes.Buffer var buf strings.Builder
slice := []Writer{&buf} slice := []Writer{&buf}
w := MultiWriter(slice...) w := MultiWriter(slice...)
slice[0] = nil slice[0] = nil