From 85b49d7f21dfbee9946bece01a168de239094716 Mon Sep 17 00:00:00 2001 From: fangguizhen <1297394526@qq.com> Date: Fri, 20 Jan 2023 09:43:40 +0000 Subject: bytes,strings: add some examples Change-Id: Ic93ad59119f3549c0f13c4f366f71e9d01b88c47 GitHub-Last-Rev: afb518047288976f440d3fe0d65923c1905a9b26 GitHub-Pull-Request: golang/go#57907 Reviewed-on: https://go-review.googlesource.com/c/go/+/462283 TryBot-Result: Gopher Robot Run-TryBot: Ian Lance Taylor Reviewed-by: Ian Lance Taylor Reviewed-by: Cherry Mui Run-TryBot: Ian Lance Taylor Auto-Submit: Ian Lance Taylor --- src/strings/example_test.go | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) (limited to 'src/strings/example_test.go') diff --git a/src/strings/example_test.go b/src/strings/example_test.go index 2a59512ceb..ab83e10de4 100644 --- a/src/strings/example_test.go +++ b/src/strings/example_test.go @@ -8,8 +8,19 @@ import ( "fmt" "strings" "unicode" + "unsafe" ) +func ExampleClone() { + s := "abc" + clone := strings.Clone(s) + fmt.Println(s == clone) + fmt.Println(unsafe.StringData(s) == unsafe.StringData(clone)) + // Output: + // true + // false +} + func ExampleBuilder() { var b strings.Builder for i := 3; i >= 1; i-- { @@ -93,6 +104,30 @@ func ExampleCut() { // Cut("Gopher", "Badger") = "Gopher", "", false } +func ExampleCutPrefix() { + show := func(s, sep string) { + after, found := strings.CutPrefix(s, sep) + fmt.Printf("CutPrefix(%q, %q) = %q, %v\n", s, sep, after, found) + } + show("Gopher", "Go") + show("Gopher", "ph") + // Output: + // CutPrefix("Gopher", "Go") = "pher", true + // CutPrefix("Gopher", "ph") = "Gopher", false +} + +func ExampleCutSuffix() { + show := func(s, sep string) { + before, found := strings.CutSuffix(s, sep) + fmt.Printf("CutSuffix(%q, %q) = %q, %v\n", s, sep, before, found) + } + show("Gopher", "Go") + show("Gopher", "er") + // Output: + // CutSuffix("Gopher", "Go") = "Gopher", false + // CutSuffix("Gopher", "er") = "Goph", true +} + func ExampleEqualFold() { fmt.Println(strings.EqualFold("Go", "go")) fmt.Println(strings.EqualFold("AB", "ab")) // true because comparison uses simple case-folding @@ -402,3 +437,13 @@ func ExampleTrimRightFunc() { })) // Output: ¡¡¡Hello, Gophers } + +func ExampleToValidUTF8() { + fmt.Printf("%s\n", strings.ToValidUTF8("abc", "\uFFFD")) + fmt.Printf("%s\n", strings.ToValidUTF8("a\xffb\xC0\xAFc\xff", "")) + fmt.Printf("%s\n", strings.ToValidUTF8("\xed\xa0\x80", "abc")) + // Output: + // abc + // abc + // abc +} -- cgit v1.3