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YAML Cheat Sheet
Master YAML with our comprehensive cheat sheet. Explore essential syntax and best practices for configuration and data serialization. Perfect for developers.
Basic
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Scalar Types
string: "Hello, World"integer: 123float: 3.14boolean: true
Inheritance
base: &default adapter: postgres host: localhostdevelopment: <<: *default database: dev_db
Variables
name: &name Exampleperson: name: *name
Multiline strings
key: | This is a multiline string.
Folded strings
key: > This is a folded string.
Two Documents
---key: value---another_key: another_value
YAML Collections
UnorderedSets
set: ? item1 ? item2 ? item3
Ordered Mappings
ordered_map: key1: value1 key2: value2
Mapping to Sequences
mapping_to_sequences: key1: - item1 - item2 key2: - item3 - item4
Sequence of Mappings
sequence_of_mappings: - key1: value1 key2: value2 - key3: value3 key4: value4
Mapping
mapping: key1: value1 key2: value2
Mapping of Mappings
mapping_of_mappings: parent1: child1: value1 child2: value2 parent2: child3: value3 child4: value4