protocol-buffers - 在 Protocol Buffer 中添加字符串数组

Question

我想在 Protocol Buffer 消息中添加字符串数组，但我无法做到。我写如下

repeated string data = 1[packed=true];

我收到以下错误:

[packed = true] can only be specified for repeated primitive fields.

我可以用相同的语法为 int 数组做到这一点。我很困惑为什么字符串被认为是非原始类型。
谁能帮帮我。？
谢谢 !!

Answer 1

请参阅 Protobuf Documentation 的“指定字段规则”部分。 .本质上，打包只对数字字段有意义。

保留繁荣的报价:

For historical reasons, repeated fields of basic numeric types aren't encoded as efficiently as they could be. New code should use the special option [packed=true] to get a more efficient encoding.