字符串拼接

helper/func.go

@@ -2,6 +2,7 @@ package helper
 
 import (
 	"reflect"
+	"strings"
 )
 
 func IsContainInArr[T comparable](a T, arr []T) bool {
@@ -31,3 +32,16 @@ func RangeSlice[T ~int | ~uint | ~int64 | ~int8 | ~int16 | ~int32 | ~uint64](sta
 	}
 	return r
 }
+
+func StrJoin(s ...string) (str string) {
+	if len(s) == 1 {
+		return s[0]
+	} else if len(s) > 1 {
+		b := strings.Builder{}
+		for _, s2 := range s {
+			b.WriteString(s2)
+		}
+		str = b.String()
+	}
+	return
+}

helper/func_test.go

@@ -112,3 +112,23 @@ func TestRangeSlice(t *testing.T) {
 		})
 	}
 }
+
+func TestStrJoin(t *testing.T) {
+	type args struct {
+		s []string
+	}
+	tests := []struct {
+		name    string
+		args    args
+		wantStr string
+	}{
+		{name: "t1", args: args{s: []string{"a", "b", "c"}}, wantStr: "abc"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if gotStr := StrJoin(tt.args.s...); gotStr != tt.wantStr {
+				t.Errorf("StrJoin() = %v, want %v", gotStr, tt.wantStr)
+			}
+		})
+	}
+}