Method tail

src/fl/stl/circular_buffer.h:143–143

    // Expose head/tail/full for move operations.
    fl::size head() const { return mHead; }
    fl::size tail() const { return mTail; }
    bool isFull() const { return mFull; }
    void setHead(fl::size h) { mHead = h; }
    void setTail(fl::size t) { mTail = t; }