add SubStringByLen

xurwxj · May 27, 2021 · 1ce4699 · 1ce4699
1 parent dae2017
commit 1ce4699
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Showing 2 changed files with 15 additions and 1 deletion.
diff --git a/base/string.go b/base/string.go
@@ -190,3 +190,12 @@ func KeepRegexCharacter(str, regexStr string) (rs string, err error) {
 	rs = reg.ReplaceAllString(str, "")
 	return
 }
+
+// KeepRegexCharacter keep all character matched in regex
+func SubStringByLen(str string, t int) (rs string) {
+	if str == "" {
+		return
+	}
+	rs = str[:t]
+	return
+}
diff --git a/main.go b/main.go
@@ -10,7 +10,12 @@ import (
 )
 
 func main() {
-	dt()
+	dgt()
+}
+
+func dgt() {
+	s := base.SubStringByLen("ex v1.2.3 data", 5)
+	fmt.Println(s)
 }
 
 func dt() {