add keywords utility example

example/stringx/filter/filter.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/tal-tech/go-zero/core/stringx"
+)
+
+func main() {
+	filter := stringx.NewTrie([]string{
+		"AV演员",
+		"苍井空",
+		"AV",
+		"日本AV女优",
+		"AV演员色情",
+	}, stringx.WithMask('?'))
+	safe, keywords, found := filter.Filter("日本AV演员兼电视、电影演员。苍井空AV女优是xx出道, 日本AV女优们最精彩的表演是AV演员色情表演")
+	fmt.Println(safe)
+	fmt.Println(keywords)
+	fmt.Println(found)
+}

example/stringx/replace/replace.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/tal-tech/go-zero/core/stringx"
+)
+
+func main() {
+	replacer := stringx.NewReplacer(map[string]string{
+		"PHP": "PPT",
+		"世界上": "吹牛",
+	})
+	fmt.Println(replacer.Replace("PHP是世界上最好的语言！"))
+}