# `WolframModel.Event`
[🔗](https://github.com/sragli/wolfram_model/blob/main/lib/wolfram_model.ex#L32)

Represents a single rewrite event in the Wolfram Model evolution.

Fields:
- `id` - unique event id
- `generation` - generation when the event occurred
- `rule` - the rule applied
- `removed` - hyperedges removed (list of vertex lists)
- `added` - hyperedges added (list of vertex lists)
- `affected_vertices` - list of vertices affected
- `parent_ids` - list of parent event ids
- `metadata` - optional map for extra info

# `t`

```elixir
@type t() :: %WolframModel.Event{
  added: [[Hypergraph.vertex()]],
  affected_vertices: [Hypergraph.vertex()],
  generation: non_neg_integer(),
  id: integer(),
  metadata: map(),
  parent_ids: [integer()],
  removed: [[Hypergraph.vertex()]],
  rule: WolframModel.rule()
}
```

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*Consult [api-reference.md](api-reference.md) for complete listing*