# `StatifierBlocks.Predicates.TruthTable.Column`
[🔗](https://github.com/riddler/statifier_blocks/blob/v0.44.1/lib/statifier_blocks/predicates/truth_table.ex#L62)

One truth-table column: a key, a display label, and a predicator source
string, or `source: nil` for the `otherwise` column.

# `t`

```elixir
@type t() :: %StatifierBlocks.Predicates.TruthTable.Column{
  key: String.t(),
  label: String.t(),
  source: String.t() | nil
}
```

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