---
title: Compound StrictYAML Validators
---

- [Fixed length sequences (FixedSeq)](fixed-length-sequences)
- [Mappings combining defined and undefined keys (MapCombined)](map-combined)
- [Mappings with arbitrary key names (MapPattern)](map-pattern)
- [Mapping with defined keys and a custom key validator (Map)](mapping-with-slug-keys)
- [Using a YAML object of a parsed mapping](mapping-yaml-object)
- [Mappings with defined keys (Map)](mapping)
- [Optional keys with defaults (Map/Optional)](optional-keys-with-defaults)
- [Validating optional keys in mappings (Map)](optional-keys)
- [Sequences of unique items (UniqueSeq)](sequences-of-unique-items)
- [Sequence/list validator (Seq)](sequences)
- [Updating document with a schema](update)
