Golang 创建 bytes.Buffer 数组的 multireader

Question

我[]*bytes.Bufferbuffer_slice := ... (type []*bytes.Buffer)写时需要创建切片的 MultiReaderio.MultiReader(buffer_slice)我收到错误：cannot use buffer_slice (type []*bytes.Buffer) as type io.Reader in argument to io.MultiReader: []*bytes.Buffer does not implement io.Reader (missing Read method).但是函数签名 MultiReader(readers ...Reader) Reader我明白传输数组没有意义，实际问题：除了琐碎的循环，还有没有更多的选择？PS抱歉我的英语不好。

Answer 1

你的切片应该是类型 []io.Reader

b1 := &bytes.Buffer{}

b2 := &bytes.Buffer{}

buffers := []io.Reader{b1, b2}

multi := io.MultiReader(buffers...)