Method visitControllers

src/fl/channels/cled_controller.h:220–226

    /// @tparam Visitor callable type (function, lambda, functor, etc.)
    template<typename Visitor>
    static void visitControllers(Visitor&& visitor) FL_NOEXCEPT {
        const CLEDController *pCur = head();
        while(pCur) {
            visitor(pCur, fl::span<const CRGB>(pCur->leds(), pCur->size()));
            pCur = pCur->next();
        }
    }

    /// Get the next controller in the linked list after this one (const version).  Will return nullptr at the end of the linked list.
    /// @returns CLEDController::mPNext