How to move an application between monitors in Hammerspoon?

Question

At work I have a 3 monitor setup. I would like to move the current application to a second or a third monitor with a key binding. How to do that?

Answer 1

I use the following script to cycle the focused window through the screens.

-- bind hotkey
hs.hotkey.bind({'alt', 'ctrl', 'cmd'}, 'n', function()
  -- get the focused window
  local win = hs.window.focusedWindow()
  -- get the screen where the focused window is displayed, a.k.a. current screen
  local screen = win:screen()
  -- compute the unitRect of the focused window relative to the current screen
  -- and move the window to the next screen setting the same unitRect 
  win:move(win:frame():toUnitRect(screen:frame()), screen:next(), true, 0)
end)