> ## Documentation Index
> Fetch the complete documentation index at: https://cantonfoundation-dpm-import.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# DA.Functor

> Reference documentation for Daml module DA.Functor.

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# DA.Functor

The `Functor` class is used for types that can be mapped over.

## Module Snapshot

<CardGroup cols={2}>
  <Card title="Lifecycle">
    Stable.
  </Card>

  <Card title="Notices">
    Status: `active`
    Introduced in: `3.4.9`
    Removed in: `-`
    Warnings: `0`
    Deprecations: `0`
    Deprecated since: `-`
  </Card>
</CardGroup>

## Functions

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### `$>`

`$>` : [`Functor`](/appdev/reference/daml-standard-library/prelude#class-ghc-base-functor-31205) `f` => `f` `a` -> `b` -> `f` `b`

Replace all locations in the input (on the left) with the given
value (on the right).

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### `<&>`

`<&>` : [`Functor`](/appdev/reference/daml-standard-library/prelude#class-ghc-base-functor-31205) `f` => `f` `a` -> (`a` -> `b`) -> `f` `b`

Map a function over a functor. Given a value `as` and a function
`f`, `as <&> f` is `f <$> as`. That is, `<&>` is like `<$>` but the
arguments are in reverse order.

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### `<$$>`

`<$$>` : ([`Functor`](/appdev/reference/daml-standard-library/prelude#class-ghc-base-functor-31205) `f`, [`Functor`](/appdev/reference/daml-standard-library/prelude#class-ghc-base-functor-31205) `g`) => (`a` -> `b`) -> `g` (`f` `a`) -> `g` (`f` `b`)

Nested `<$>`.

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### `void`

`void` : [`Functor`](/appdev/reference/daml-standard-library/prelude#class-ghc-base-functor-31205) `f` => `f` `a` -> `f` ()

Replace all the locations in the input with `()`.