Function swap

extern/imgui/imgui.h:1871–1871

    inline T&           back()                              { IM_ASSERT(Size > 0); return Data[Size - 1]; }
    inline const T&     back() const                        { IM_ASSERT(Size > 0); return Data[Size - 1]; }
    inline void         swap(ImVector<T>& rhs)              { int rhs_size = rhs.Size; rhs.Size = Size; Size = rhs_size; int rhs_cap = rhs.Capacity; rhs.Capacity = Capacity; Capacity = rhs_cap; T* rhs_data = rhs.Data; rhs.Data = Data; Data = rhs_data; }

    inline int          _grow_capacity(int sz) const        { int new_capacity = Capacity ? (Capacity + Capacity / 2) : 8; return new_capacity > sz ? new_capacity : sz; }
    inline void         resize(int new_size)                { if (new_size > Capacity) reserve(_grow_capacity(new_size)); Size = new_size; }