# `Ash.Resource.Calculation.Builtins`
[🔗](https://github.com/ash-project/ash/blob/v3.27.8/lib/ash/resource/calculation/builtins.ex#L5)

Built in calculations that are automatically imported in the calculations section

# `concat`

```elixir
@spec concat(keys :: [atom()], separator :: String.t()) ::
  Ash.Resource.Calculation.ref()
```

An example concatenation calculation, that accepts the delimiter as an argument

## Examples

    calculate :full_name, :string, concat([:first_name, :last_name], " ")

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