Function _apply_unique_strategy

lib/sqlalchemy/engine/_result_cy.py:696–711

(
    rows: Sequence[Any],
    destination: list[Any],
    uniques: set[Any],
    strategy: Callable[[Any], Any] | None,
)

@cython.inline
@cython.cfunc
def _apply_unique_strategy(
    rows: Sequence[Any],
    destination: list[Any],
    uniques: set[Any],
    strategy: Callable[[Any], Any] | None,
) -> list[Any]:
    i: cython.Py_ssize_t
    has_strategy: cython.bint = strategy is not None
    for i in range(len(rows)):
        row = rows[i]
        hashed = strategy(row) if has_strategy else row
        if hashed in uniques:
            continue
        uniques.add(hashed)
        destination.append(row)
    return destination