{~, null} |
Null (no value). |
[1234, 0x4D2, 02333] |
[Decimal int, Hexadecimal int, Octal int] |
[1_230.15, 12.3015e+02] |
[Fixed float, Exponential float] |
[.inf, -.Inf, .NAN] |
[Infinity (float), Negative, Not a number] |
{Y, true, Yes, ON} |
Boolean true |
{n, FALSE, No, off} |
Boolean false |
YAML Reference
Language Independent Scalar Types
More types
!!set |
{cherries, plums, apples} |
!!omap |
[one: 1, two: 2] |
Core types (default automatic tags)
!!map |
{Hash table, dictionary, mapping} |
!!seq |
{List, array, tuple, vector, sequence} |
!!str |
Unicode string |
Misc indicators
# |
Throwaway comment indicator |
`@ |
Both reserved for future use |
Tag Property (usually unspecified)
none |
Unspecified tag (automatically resolved by application) |
! |
Non-specific tag (by default, !!map/!!seq/!!str) |
!foo |
Primary (by convention, means a local !foo tag) |
!!foo |
Secondary (by convention, means tag:yaml.org,2002:foo) |
!h!foo |
Requires %TAG !h! <prefix> (and then means <prefix>foo) |
!<foo> |
Verbatim tag (always means foo) |
Scalar indicators
'' |
Surround in-line unescaped scalar |
" |
Surround in-line escaped scalar |
| |
Block scalar indicator |
> |
Folded scalar indicator |
- |
Strip chomp modifier (|- or >-) |
+ |
Keep chomp modifier (|+ or >+) |
1-9 |
Explicit indentation modifier (|1 or >2). Modifiers can be combined (|2-, >+1) |
Special keys
= |
Default "value" mapping key |
<< |
Merge keys from another mapping |
Alias indicators
& |
Anchor property |
* |
Alias indicator |
Collection indicators
? |
Key indicator |
: |
Value indicator |
- |
Nested series entry indicator |
, |
Separate in-line branch entries |
[] |
Surround in-line series branch |
{} |
Surround in-line keyed branch |
Document indicators
% |
Directive indicator |
--- |
Document header |
... |
Document terminator |
Comments