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137 lines
4.0 KiB
Markdown
137 lines
4.0 KiB
Markdown
---
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language: yaml
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contributors:
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- ["Adam Brenecki", "https://github.com/adambrenecki"]
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translators:
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- ["Zach Zhang", "https://github.com/checkcheckzz"]
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filename: learnyaml-cn.yaml
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lang: zh-cn
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---
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YAML是一个数据序列化语言，被设计成人类直接可写可读的。
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它是JSON的严格超集，增加了语法显著换行符和缩进，就像Python。但和Python不一样，
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YAML根本不容许文字制表符。
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```yaml
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# YAML中的注解看起来像这样。
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################
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# 标量类型 #
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################
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# 我们的根对象 (它们在整个文件里延续) 将会是一个地图，
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# 它等价于在别的语言里的一个字典，哈西表或对象。
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key: value
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another_key: Another value goes here.
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a_number_value: 100
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scientific_notation: 1e+12
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boolean: true
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null_value: null
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key with spaces: value
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# 注意到字符串不需要被引用。但是，它们可以被引用。
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"Keys can be quoted too.": "Useful if you want to put a ':' in your key."
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# 多行字符串既可以写成像一个'文字块'(使用 |)，
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# 或像一个'折叠块'(使用 '>')。
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literal_block: |
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This entire block of text will be the value of the 'literal_block' key,
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with line breaks being preserved.
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The literal continues until de-dented, and the leading indentation is
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stripped.
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Any lines that are 'more-indented' keep the rest of their indentation -
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these lines will be indented by 4 spaces.
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folded_style: >
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This entire block of text will be the value of 'folded_style', but this
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time, all newlines will be replaced with a single space.
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Blank lines, like above, are converted to a newline character.
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'More-indented' lines keep their newlines, too -
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this text will appear over two lines.
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####################
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# 集合类型 #
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####################
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# 嵌套是通过缩进完成的。
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a_nested_map:
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key: value
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another_key: Another Value
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another_nested_map:
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hello: hello
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# 地图不用有字符串键值。
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0.25: a float key
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# 键值也可以是多行对象，用?表明键值的开始。
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? |
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This is a key
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that has multiple lines
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: and this is its value
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# YAML也容许键值是集合类型，但是很多语言将会抱怨。
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# 序列 (等价于表或数组) 看起来像这样：
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a_sequence:
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- Item 1
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- Item 2
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- 0.5 # 序列可以包含不同类型。
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- Item 4
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- key: value
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another_key: another_value
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-
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- This is a sequence
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- inside another sequence
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# 因为YAML是JSON的超集，你也可以写JSON风格的地图和序列：
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json_map: {"key": "value"}
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json_seq: [3, 2, 1, "takeoff"]
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#######################
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# 其余的YAML特点 #
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#######################
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# YAML还有一个方便的特点叫'锚'，它让你简单地在整个文件里重复内容。
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# 两个键值将会有相同的值：
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anchored_content: &anchor_name This string will appear as the value of two keys.
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other_anchor: *anchor_name
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# YAML还有标签，你可以用它显示地声明类型。
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explicit_string: !!str 0.5
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# 一些解析器实现特定语言的标签，就像这个为了Python的复数类型。
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python_complex_number: !!python/complex 1+2j
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####################
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# 其余的YAML类型 #
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####################
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# 字符串和数字不是仅有的YAML可以理解的标量。
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# ISO 格式的日期和日期时间文字也是可以被解析的。
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datetime: 2001-12-15T02:59:43.1Z
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datetime_with_spaces: 2001-12-14 21:59:43.10 -5
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date: 2002-12-14
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# 这个!!binary标签表明一个字符串实际上是一个二进制blob的base64编码表示。
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gif_file: !!binary |
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R0lGODlhDAAMAIQAAP//9/X17unp5WZmZgAAAOfn515eXvPz7Y6OjuDg4J+fn5
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OTk6enp56enmlpaWNjY6Ojo4SEhP/++f/++f/++f/++f/++f/++f/++f/++f/+
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+f/++f/++f/++f/++f/++SH+Dk1hZGUgd2l0aCBHSU1QACwAAAAADAAMAAAFLC
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AgjoEwnuNAFOhpEMTRiggcz4BNJHrv/zCFcLiwMWYNG84BwwEeECcgggoBADs=
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# YAML还有一个集合类型，它看起来像这样：
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set:
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? item1
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? item2
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? item3
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# 像Python一样，集合仅是有null数值的地图；上面的集合等价于：
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set2:
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item1: null
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item2: null
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item3: null
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```
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