fill = ({container, liquid} = {}) ->
container ?= "mug"
liquid ?= "coffee"
"Filling the #{container} with #{liquid}..."
alert fill(liquid: "juice", container: "glass")
alert fill()
fill = (quantity="500 mL", {container, liquid} = {}) ->
container ?= "mug"
liquid ?= "coffee"
"Filling the #{container} with #{quantity} of #{liquid}..."
alert fill("1L", liquid: "juice", container: "glass")
alert fill()
alert fill "1L"
alert fill "1L", liquid: "water"