📅 最后修改于: 2020-10-14 08:38:53 🧑 作者: Mango
各种类型的字符用于各种功能。本章详细讨论了YAML中使用的语法，并着重于字符操作。
指示灯字符包括用来描述YAML文件的内容的特殊语义。下表详细显示了此内容。
| Sr.No. | Character & Functionality |
|---|---|
| 1 |
_ It denotes a block sequence entry |
| 2 |
? It denotes a mapping key |
| 3 |
: It denotes a mapping value |
| 4 |
, It denotes flow collection entry |
| 5 |
[ It starts a flow sequence |
| 6 |
] It ends a flow sequence |
| 7 |
{ It starts a flow mapping |
| 8 |
} It ends a flow mapping |
| 9 |
# It denotes the comments |
| 10 |
& It denotes node’s anchor property |
| 11 |
* It denotes alias node |
| 12 |
! It denotes node’s tag |
| 13 |
| It denotes a literal block scalar |
| 14 |
> It denotes a folded block scalar |
| 15 |
` Single quote surrounds a quoted flow scalar |
| 16 |
“ Double quote surrounds double quoted flow scalar |
| 17 |
% It denotes the directive used |
以下示例显示了语法中使用的字符-
%YAML 1.1
---
!!map {
? !!str "sequence"
: !!seq [
!!str "one", !!str "two"
],
? !!str "mapping"
: !!map {
? !!str "sky" : !!str "blue",
? !!str "sea" : !!str "green",
}
}
# This represents
# only comments.
---
!!map1 {
? !!str "anchored"
: !local &A1 "value",
? !!str "alias"
: *A1,
}
!!str "text"