struct YAML::Any
Overview
YAML::Any
is a convenient wrapper around all possible YAML core types
(YAML::Any::Type
) and can be used for traversing dynamic or
unknown YAML structures.
require "yaml"
data = YAML.parse <<-END
---
foo:
bar:
baz:
- qux
- fox
END
data["foo"]["bar"]["baz"][0].as_s # => "qux"
data["foo"]["bar"]["baz"].as_a # => ["qux", "fox"]
Note that methods used to traverse a YAML structure, #[]
, #[]?
and #each
,
always return a YAML::Any
to allow further traversal. To convert them to String
,
Array
, etc., use the as_
methods, such as #as_s
, #as_a
, which perform
a type check against the raw underlying value. This means that invoking #as_s
when the underlying value is not a String
will raise: the value won't automatically
be converted (parsed) to a String
.
Defined in:
yaml/any.crConstructors
Instance Method Summary
-
#==(other)
Returns
true
if the raw object is equal to other. -
#==(other : YAML::Any)
Returns
true
if bothself
and other's raw object are equal. - #[](index_or_key) : YAML::Any
- #[]?(index_or_key) : YAML::Any?
-
#as_a : Array(Any)
Checks that the underlying value is
Array
, and returns its value. -
#as_a? : Array(Any)?
Checks that the underlying value is
Array
, and returns its value. -
#as_bytes : Bytes
Checks that the underlying value is
Bytes
, and returns its value. -
#as_bytes? : Bytes?
Checks that the underlying value is
Bytes
, and returns its value. -
#as_f : Float64
Checks that the underlying value is
Float64
, and returns its value. -
#as_f? : Float64?
Checks that the underlying value is
Float64
, and returns its value. -
#as_h : Hash(Any, Any)
Checks that the underlying value is
Hash
, and returns its value. -
#as_h? : Hash(Any, Any)?
Checks that the underlying value is
Hash
, and returns its value. - #as_i : Int32
-
#as_i64 : Int64
Checks that the underlying value is
Int64
, and returns its value. -
#as_i64? : Int64?
Checks that the underlying value is
Int64
, and returns its value. - #as_i? : Int32?
-
#as_nil : Nil
Checks that the underlying value is
Nil
, and returnsnil
. -
#as_s : String
Checks that the underlying value is
String
, and returns its value. -
#as_s? : String?
Checks that the underlying value is
String
, and returns its value. -
#as_time : Time
Checks that the underlying value is
Time
, and returns its value. -
#as_time? : Time?
Checks that the underlying value is
Time
, and returns its value. - #clone
- #dup
- #hash(hasher)
-
#raw : Type
Returns the raw underlying value, a
Type
. - #size : Int
Instance methods inherited from struct Struct
==(other) : Bool
==,
hash(hasher)
hash,
inspect(io : IO) : Nil
inspect,
pretty_print(pp) : Nil
pretty_print,
to_s(io)
to_s
Instance methods inherited from struct Value
==(other : JSON::Any)==(other : YAML::Any)
==(other) ==, dup dup
Instance methods inherited from class Object
!=(other)
!=,
!~(other)
!~,
==(other)
==,
===(other : JSON::Any)===(other : YAML::Any)
===(other) ===, =~(other) =~, class class, dup dup, hash(hasher)
hash hash, inspect(io : IO)
inspect inspect, itself itself, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, tap(&block) tap, to_json(io : IO)
to_json to_json, to_pretty_json(indent : String = " ")
to_pretty_json(io : IO, indent : String = " ") to_pretty_json, to_s
to_s(io : IO) to_s, to_yaml(io : IO)
to_yaml to_yaml, try(&block) try, unsafe_as(type : T.class) forall T unsafe_as
Constructor methods inherited from class Object
from_json(string_or_io, root : String) : selffrom_json(string_or_io) : self from_json, from_yaml(string_or_io : String | IO) : self from_yaml
Constructor Detail
Instance Method Detail
Returns true
if both self
and other's raw object are equal.
Assumes the underlying value is an Array
or Hash
and returns the element
at the given index_or_key, or nil
if out of bounds or the key is missing.
Checks that the underlying value is Array
, and returns its value.
Raises otherwise.
Checks that the underlying value is Array
, and returns its value.
Returns nil
otherwise.
Checks that the underlying value is Bytes
, and returns its value.
Raises otherwise.
Checks that the underlying value is Bytes
, and returns its value.
Returns nil
otherwise.
Checks that the underlying value is Float64
, and returns its value.
Raises otherwise.
Checks that the underlying value is Float64
, and returns its value.
Returns nil
otherwise.
Checks that the underlying value is Hash
, and returns its value.
Raises otherwise.
Checks that the underlying value is Hash
, and returns its value.
Returns nil
otherwise.
Checks that the underlying value is Int64
, and returns its value.
Raises otherwise.
Checks that the underlying value is Int64
, and returns its value.
Returns nil
otherwise.
Checks that the underlying value is Nil
, and returns nil
.
Raises otherwise.
Checks that the underlying value is String
, and returns its value.
Raises otherwise.
Checks that the underlying value is String
, and returns its value.
Returns nil
otherwise.
Checks that the underlying value is Time
, and returns its value.
Raises otherwise.
Checks that the underlying value is Time
, and returns its value.
Returns nil
otherwise.