What would the action sequence be like for sheathing one weapon,drawing another,and attacking?

what would the action sequence be like for sheathing one weapon,drawing another,and attacking?Is that all 1 action? @Brail4 yeah – the intent is to avoid punishing players for that stuff by charging an action

— Mike Mearls (@mikemearls) July 19, 2014

@vikke064 @Brail4In http://t.co/QnCyUIc02C it seems you only get strictly one interaction, either sheathing or drawing a weapon. DM is free to make a call, based on the situation

— Mike Mearls (@mikemearls) July 21, 2014