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02c-Quiz-Objects-Answers.coffee
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02c-Quiz-Objects-Answers.coffee
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###
Quiz-Objects
Shorthand answers are listed at the end under BONUS
###
######################################## Q1
# Create an object with x and y properties, each with the value 0, and assign the object to the variable box.
box = {x:0,y:0}
######################################## Q2
# Create a variable 'block' and assign to it an object with no properties
# Aftwards, add two properties to it, width and height, each set to 10
block = {}
block.width = 10
block.height = 10
######################################## Q3
# Write code that makes the output match what's described.
jonSnow = {knowledge:"nothing"}
print(jonSnow.knowledge) # "nothing"
######################################## Q4
# Q: What does this program print out?
dragon = {name:"Trogdor"}
print(dragon.name) # A: "Trogdor"
######################################## Q5
# Q: What does this program print out?
robot = {name:"R2D2"}
robot.name = "C3PO"
print(robot.name) # A: "C3PO"
######################################## Q6
# Q: What does this program print out?
wand = {name:"Elder",owner:"Potter",length:15}
print(wand.owner) # A: "Potter"
######################################## Q7
# Q: What does this program print out?
name = "Bob"
guy1 = {name:"Ralf"}
guy2 = {name:"Sam"}
print(name) # A: "Bob"
######################################## Q8
# Create an object with three property value pairs,
# where one of the values is another object with two property value pairs.
# (Your choice of names and values.)
file = {name:"Norman1.pdf", lastEdited:"1/10/2017", container: {name:"Documents",lastEdited:"1/10/2017"}}
######################################## Q9 BONUS (references)
# Q: What does this program print out?
Agent = {name:"Eddie",alive:true}
DoubleAgent = Agent
Agent.alive = false
print(DoubleAgent.alive) # A: false
######################################## Q10 BONUS (shortcuts)
# Q: What does this program print out?
header =
text:"Mike"
visible:false
print masthead.visible #A: false
########################################
######################################## BONUS
########################################
# Rewrite the objects and functions in this file using shorthand.
######################################## Q1
# Create an object with x and y properties, each with the value 0, and assign the object to the variable box.
box =
x:0
y:0
######################################## Q2
# Create a variable 'block' and assign to it an object with no properties
# Aftwards, add two properties to it, width and height, each set to 10
block = {}
block.width = 10
block.height = 10
######################################## Q3
# Write code that makes the output match what's described.
jonSnow =
knowledge:"nothing"
print jonSnow.knowledge # "nothing"
######################################## Q4
# Q: What does this program print out?
dragon =
name:"Trogdor"
print dragon.name # A: "Trogdor"
######################################## Q5
# Q: What does this program print out?
robot =
name:"R2D2"
robot.name = "C3PO"
print robot.name # A: "C3PO"
######################################## Q6
# Q: What does this program print out?
wand =
name:"Elder"
owner:"Potter"
length:15
print wand.owner # A: "Potter"
######################################## Q7
# Q: What does this program print out?
name = "Bob"
guy1 =
name:"Ralf"
guy2 =
name:"Sam"
print name # A: "Bob"
######################################## Q8
# Create an object with three property value pairs,
# where one of the values is another object with two property value pairs.
# (Your choice of names and values.)
file =
name:"Norman1.pdf"
lastEdited:"1/10/2017"
container:
name:"Documents"
lastEdited:"1/10/2017"
# OR
file =
name:"Norman1.pdf"
lastEdited:"1/10/2017"
container:{name:"Documents",lastEdited:"1/10/2017"}
######################################## Q9 BONUS (references)
# Q: What does this program print out?
Agent =
name:"Eddie"
alive:true
DoubleAgent = Agent
Agent.alive = false
print DoubleAgent.alive # A: false