map.coffee

groceryList = {}
groceryList['Bananas'] = 6
groceryList['Apples'] = 12
groceryList['Grapes'] = 2
groceryList['Kiwis'] = 10
groceryList['Pears'] = 8

console.log(groceryList['Kiwis'] == 10)
console.log(Object.keys(groceryList).length == 5)

for key, val of groceryList
  console.log("#{key} = #{val}")

delete groceryList['Apples']
console.log(Object.keys(groceryList).length == 4)

values = []
for key, val of groceryList
  values.push(val)
console.log(values)
console.log(Object.keys(groceryList))

for key of groceryList
  delete groceryList[key]
console.log(Object.keys(groceryList).length == 0)