More about JavaScript & CoffeeScript arguments

destructuring.coffee

motorcycle = ({ brand, year } = { brand: 'Unknown', year: "1999" }) ->
  alert "brand: #{brand}, year: #{year}"
 
motorcycle()
#brand: 'Unknown', year: "1999"

motorcycle year:"2005", brand:"YAMAHA"
#brand: 'YAMAHA', year: 2005

moresplats.coffee

#Section I
run_from_killer = (survivors..., victim)->
  console.log "dead: #{victim}, survive: #{survivors}"


run_from_killer "John"
#dead: John, survive:
run_from_killer "John","Bob","Alex","Sam"
#dead: Sam, survive: John,Bob,Alex


#Section II
fruit = (first, middle..., last) ->
   console.log "first: #{first}, last: #{last}, middle: #{middle}"

fruit "apple", "banana"
#first: apple, last: banana, middle:

fruit "apple", "banana", "coconut", "dragon fruit"
#first: apple, last: dragon fruit, middle: banana,coconut

#Section III
my_cargo = ["cherry","pear","papaya","orange","mango"]

fruit my_cargo...
#first: cherry, last: mango, middle: pear,papaya,orange
#first: apple, last: dragon fruit, middle: banana,coconut

objectarg.js

function showName(name){
  console.log(name.first + " " + name["last"] + " "+ name["middle"]);
}

showName({"last"  : "Lee",
          "first" : "John"})

//John Lee undefined