如何在YAML中使用列表键编写Ruby哈希？

Question

说我有：

h = {}
h[["one", "two"]] = "three"
# h = {["one", "two"]=>"three"}

如何在YAML中表示上述哈希，以便YAML.load_file('that_file')正确加载h哈希？

Answer 1

您可以使用to_yaml方法预览：

h = {}
h[["one", "two"]] = "three"
h.to_yaml
# => "---\n? - one\n  - two\n: three\n"