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feat: support core schema (#13)
Ref: https://yaml.org/spec/1.2/spec.html#schema/core/ - `null_scalar` - `boolean_scalar` - `integer_scalar` - `float_scalar` - `string_scalar`
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‎README.md

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@@ -37,13 +37,15 @@ console.log(tree.rootNode.toString());
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// (block_mapping
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// (block_mapping_pair
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// key: (flow_node
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// (plain_scalar))
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// (plain_scalar
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// (string_scalar)))
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// value: (block_node
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// (anchor)
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// (block_sequence
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// (block_sequence_item
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// (flow_node
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// (plain_scalar))))))))))
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// (plain_scalar
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// (string_scalar)))))))))))
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```
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## License

‎corpus/schema.txt

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================================================================================
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Example 10.4. !!null Examples
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================================================================================
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!!null null: value for null key
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key with null value: !!null null
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--------------------------------------------------------------------------------
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(stream
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(document
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(block_node
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(block_mapping
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(block_mapping_pair
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key: (flow_node
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(tag)
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(plain_scalar
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(null_scalar)))
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value: (flow_node
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(plain_scalar
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(string_scalar))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(null_scalar))))))))
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================================================================================
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Example 10.5. !!bool Examples
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================================================================================
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YAML is a superset of JSON: !!bool true
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Pluto is a planet: !!bool false
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--------------------------------------------------------------------------------
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(stream
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(document
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(block_node
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(block_mapping
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(boolean_scalar))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(boolean_scalar))))))))
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================================================================================
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Example 10.6. !!int Examples
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================================================================================
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negative: !!int -12
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zero: !!int 0
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positive: !!int 34
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--------------------------------------------------------------------------------
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(stream
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(document
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(block_node
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(block_mapping
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(integer_scalar))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(integer_scalar))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(integer_scalar))))))))
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================================================================================
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Example 10.7. !!float Examples
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================================================================================
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negative: !!float -1
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zero: !!float 0
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positive: !!float 2.3e4
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infinity: !!float .inf
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not a number: !!float .nan
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--------------------------------------------------------------------------------
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(stream
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(document
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(block_node
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(block_mapping
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(integer_scalar))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(integer_scalar))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(float_scalar))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(float_scalar))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(tag)
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(plain_scalar
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(float_scalar))))))))
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================================================================================
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Example 10.8. JSON Tag Resolution
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================================================================================
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A null: null
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Booleans: [ true, false ]
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Integers: [ 0, -0, 3, -19 ]
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Floats: [ 0., -0.0, 12e03, -2E+05 ]
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Invalid: [ True, Null, 0o7, 0x3A, +12.3 ]
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--------------------------------------------------------------------------------
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(stream
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(document
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(block_node
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(block_mapping
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(plain_scalar
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(null_scalar))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(flow_sequence
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(flow_node
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(plain_scalar
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(boolean_scalar)))
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(flow_node
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(plain_scalar
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(boolean_scalar))))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(flow_sequence
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(flow_node
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(plain_scalar
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(integer_scalar)))
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(flow_node
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(plain_scalar
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(integer_scalar)))
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(flow_node
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(plain_scalar
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(integer_scalar)))
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(flow_node
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(plain_scalar
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(integer_scalar))))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(flow_sequence
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(flow_node
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(plain_scalar
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(float_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar))))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(flow_sequence
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(flow_node
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(plain_scalar
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(boolean_scalar)))
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(flow_node
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(plain_scalar
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(null_scalar)))
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(flow_node
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(plain_scalar
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(integer_scalar)))
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(flow_node
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(plain_scalar
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(integer_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar))))))))))
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================================================================================
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Example 10.9. Core Tag Resolution
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================================================================================
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A null: null
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Also a null: # Empty
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Not a null: ""
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Booleans: [ true, True, false, FALSE ]
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Integers: [ 0, 0o7, 0x3A, -19 ]
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Floats: [ 0., -0.0, .5, +12e03, -2E+05 ]
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Also floats: [ .inf, -.Inf, +.INF, .NAN ]
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--------------------------------------------------------------------------------
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(stream
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(document
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(block_node
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(block_mapping
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(plain_scalar
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(null_scalar))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar))))
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(comment)
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(double_quote_scalar)))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(flow_sequence
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(flow_node
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(plain_scalar
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(boolean_scalar)))
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(flow_node
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(plain_scalar
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(boolean_scalar)))
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(flow_node
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(plain_scalar
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(boolean_scalar)))
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(flow_node
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(plain_scalar
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(boolean_scalar))))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(flow_sequence
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(flow_node
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(plain_scalar
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(integer_scalar)))
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(flow_node
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(plain_scalar
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(integer_scalar)))
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(flow_node
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(plain_scalar
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(integer_scalar)))
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(flow_node
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(plain_scalar
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(integer_scalar))))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(flow_sequence
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(flow_node
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(plain_scalar
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(float_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar))))))
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(block_mapping_pair
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key: (flow_node
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(plain_scalar
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(string_scalar)))
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value: (flow_node
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(flow_sequence
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(flow_node
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(plain_scalar
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(float_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar)))
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(flow_node
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(plain_scalar
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(float_scalar))))))))))

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