GO语言 按照索引切割字符串并返回分割后的两个字符串

需求：将指定字符串按照索引切割，并将切割后的两个字符串返回

package mainimport ("fmt"
)func main() {rawString := "HelloWorld"index := 3sp1, sp2 := splitStringbyIndex(rawString, index)fmt.Printf("The string %s split at position %d is: %s / %s\n", rawString, index, sp1, sp2)
}func splitStringbyIndex(str string, i int) (sp1, sp2 string) {// 优化，优先操作二进制数据rawStrSlice := []byte(str)sp1 = string(rawStrSlice[:i])sp2 = string(rawStrSlice[i:])// 直接操作字符串也可以//sp1 = str[:i]//sp2 = str[i:]return
}

结果：

The string HelloWorld split at position 3 is: Hel / loWorld