How to swap the buffers in 2 windows emacs

Question

I am using emacs I find that sometimes I have 2 files separated into 2 windows.

For example: I open 1 file using C-x C-f file1.c RET

and I split t

Answer 1

If you are using Prelude you can just use C-c s (prelude-swap-windows). From the Prelude documentation:

C-c s runs the command crux-swap-windows (found in prelude-mode-map), which is an alias for crux-transpose-windows in crux.el.

Answer 2

The following code snippet can do switch buffer.

(defun ab/switch-buffer-each-other (arg)
  "switch current buffer with other window buffer 
   right-2-left and up-2-down"
  (interactive "p")
  (cond
   ((windmove-find-other-window 'right) (buf-move-right))
   ((windmove-find-other-window 'left) (buf-move-left))
   ((windmove-find-other-window 'up) (buf-move-up))
   ((windmove-find-other-window 'down) (buf-move-down)))
(message "switch buffer done"))