Function focused

focused<S>(data): (<T, A, B>(o) => OpticCat<S, T, A, B>)
Creates a focused environment to compute about the part of the data structure.
Type Parameters
- S
Parameters
- data: S
  The data to be computed.
Returns (<T, A, B>(o) => OpticCat<S, T, A, B>)
The modified environment.
- - <T, A, B>(o): OpticCat<S, T, A, B>
  - Type Parameters
    - T
    - A
    - B
    Parameters
    - o: Optic<S, T, A, B>
    Returns OpticCat<S, T, A, B>
- Defined in src/optical.ts:282

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