YAML - 流映射
YAML 中的流映射表示无序的键值对集合。它们也称为映射节点。请注意,键应保持唯一。如果流映射结构中的键重复,则会产生错误。键顺序在序列化树中生成。
示例
下面显示了流映射结构的示例 −
%YAML 1.1 paper: uuid: 8a8cbf60-e067-11e3-8b68-0800200c9a66 name: On formally undecidable propositions of Principia Mathematica and related systems I. author: Kurt Gödel. tags: - tag: uuid: 98fb0d90-e067-11e3-8b68-0800200c9a66 name: Mathematics - tag: uuid: 3f25f680-e068-11e3-8b68-0800200c9a66 name: Logic
JSON格式的映射序列(无序列表)输出如下图所示 −
{ "paper": { "uuid": "8a8cbf60-e067-11e3-8b68-0800200c9a66", "name": "On formally undecidable propositions of Principia Mathematica and related systems I.", "author": "Kurt Gödel." }, "tags": [ { "tag": { "uuid": "98fb0d90-e067-11e3-8b68-0800200c9a66", "name": "Mathematics" } }, { "tag": { "uuid": "3f25f680-e068-11e3-8b68-0800200c9a66", "name": "Logic" } } ] }
如果您观察如上所示的输出,就会发现键名称在 YAML 映射结构中保持唯一。