michael@356: %YAML 1.1   # Reference card
michael@356: ---
michael@356: Collection indicators:
michael@356:      '? ' : Key indicator.
michael@356:      ': ' : Value indicator.
michael@356:      '- ' : Nested series entry indicator.
michael@356:      ', ' : Separate in-line branch entries.
michael@356:      '[]' : Surround in-line series branch.
michael@356:      '{}' : Surround in-line keyed branch.
michael@356: Scalar indicators:
michael@356:     '''' : Surround in-line unescaped scalar ('' escaped ').
michael@356:      '"' : Surround in-line escaped scalar (see escape codes below).
michael@356:      '|' : Block scalar indicator.
michael@356:      '>' : Folded scalar indicator.
michael@356:      '-' : Strip chomp modifier ('|-' or '>-').
michael@356:      '+' : Keep chomp modifier ('|+' or '>+').
michael@356:      1-9 : Explicit indentation modifier ('|1' or '>2').
michael@356:          # Modifiers can be combined ('|2-', '>+1').
michael@356: Alias indicators:
michael@356:      '&' : Anchor property.
michael@356:      '*' : Alias indicator.
michael@356: Tag property: # Usually unspecified.
michael@356:     none : Unspecified tag (automatically resolved by application).
michael@356:    '!'   : Non-specific tag (by default, "!!map"/"!!seq"/"!!str").
michael@356:    '!foo': Primary (by convention, means a local "!foo" tag).
michael@356:   '!!foo': Secondary (by convention, means "tag:yaml.org,2002:foo").
michael@356:  '!h!foo': Requires "%TAG !h! <prefix>" (and then means "<prefix>foo").
michael@356:  '!<foo>': Verbatim tag (always means "foo").
michael@356: Document indicators:
michael@356:     '%'  : Directive indicator.
michael@356:    '---' : Document header.
michael@356:    '...' : Document terminator.
michael@356: Misc indicators:
michael@356:     ' #' : Throwaway comment indicator.
michael@356:     '`@' : Both reserved for future use.
michael@356: Special keys:
michael@356:     '='  : Default "value" mapping key.
michael@356:     '<<' : Merge keys from another mapping.
michael@356: Core types: # Default automatic tags.
michael@356:     '!!map' : [ Hash table, dictionary, mapping ]
michael@356:     '!!seq' : [ List, array, tuple, vector, sequence ]
michael@356:     '!!str' : Unicode string
michael@356: More types:
michael@356:     '!!set' : { cherries, plums, apples }
michael@356:    '!!omap' : [ one: 1, two: 2 ]
michael@356: Language Independent Scalar types:
michael@356:     { ~, null }               : Null (no value).
michael@356:     { 1234, 0x4D2, 02333 }    : [ Decimal int, Hexadecimal int, Octal int ]
michael@356:     { 1_230.15, 12.3015e+02 } : [ Fixed float, Exponential float ]
michael@356:     { .inf, -.Inf, .NAN }     : [ Infinity (float), Negative, Not a number ]
michael@356:     { Y, true, Yes, ON  }     : Boolean true
michael@356:     { n, FALSE, No, off }     : Boolean false
michael@356:     ? !!binary >
michael@356:         R0lG...BADS=
michael@356:     : >-
michael@356:         Base 64 binary value.
michael@356: Escape codes:
michael@356:  Numeric   : { "\xXX": 8-bit, "\uXXXX": 16-bit, "\UXXXXXXXX": 32-bit }
michael@356:  Protective: { "\\": '\', "\"": '"', "\ ": ' ', "\<TAB>": "<TAB>", "\^": '^' }
michael@356:  C: { "\a": BEL, "\b": BS, "\f": FF, "\n": LF, "\r": CR, "\t": TAB, "\v": VTAB }
michael@356:  Additional: { "\e": ESC, "\0": NUL, "\_": NBSP, "\N": NEL, "\L": LS, "\P": PS }
michael@356: ...