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Add Two Struct Objects #14

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34d325c
Create Train Description Program and Passenger Struct
Jan 12, 2014
eaf50fd
Add Two New Struct Objects
Jan 14, 2014
3cf9361
Add Train Object and Update Printed Output
Jan 14, 2014
4858d4f
Second Attempt
Jan 15, 2014
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40 changes: 40 additions & 0 deletions train.rb
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Original file line number Diff line number Diff line change
@@ -0,0 +1,40 @@
Passenger = Struct.new(:name)
Train = Struct.new(:destination, :number_of_cars, :caboose, :number_of_engine)

passengers = [Passenger.new(name: 'Bill Smith'), Passenger.new(name: 'Sarah Robot')]
train = Train.new( passengers, {destination: 'New York', number_of_engines: 4, caboose: true, number_of_cars: 5})

puts "Destination: #{train.destination}"
puts "Cars: #{train.number_of_cars}"
puts "Caboose: #{train.caboose}"
puts "Passengers: #{passengers}"
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@jwo jwo Jan 14, 2014

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what does this output? Is it what you would expect?

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@robskrob robskrob Jan 14, 2014

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Everything works except: puts "Engines: #{train.number_of_engines}"

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@robskrob robskrob Jan 14, 2014

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The output is the following:
$ ruby train.rb
Destination: [#<struct Passenger name={:name=>"Bill Smith"}>, #<struct Passenger name={:name=>"Sarah Robot"}>]
Cars: {:destination=>"New York", :number_of_engines=>4, :caboose=>true, :number_of_cars=>5}
Caboose:
Passengers: [#<struct Passenger name={:name=>"Bill Smith"}>, #<struct Passenger name={:name=>"Sarah Robot"}>]
train.rb:11:in <main>': undefined methodnumber_of_engines' for #Train:0x007fb9311a86b8 (NoMethodError)

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@jwo jwo Jan 14, 2014

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So, the destination seems wrong, as well as Cars, Caboose, and Passengers.

If your definition for train is Struct.new(:destination, :number_of_cars, :caboose, :number_of_engine) then what are you sending in?

Train = Struct.new(:destination, :number_of_cars, :caboose, :number_of_engine)

There isn't a place for passengers.

And to simplify things, let's change

train = Train.new( passengers, {destination: 'New York', number_of_engines: 4, caboose: true, number_of_cars: 5})

to

train = Train.new( passengers, 'New York', 4, true, 5)

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@robskrob robskrob Jan 15, 2014

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perhaps I should watch the video again...it is not clear to me what should
be a hash vs a Struct and how to construct it the way you want it. I will
start over again.

On Tue, Jan 14, 2014 at 12:46 PM, Jesse Wolgamott
notifications@github.comwrote:

In train.rb:

@@ -0,0 +1,40 @@
+Passenger = Struct.new(:name)
+Train = Struct.new(:destination, :number_of_cars, :caboose, :number_of_engine)
+
+passengers = [Passenger.new(name: 'Bill Smith'), Passenger.new(name: 'Sarah Robot')]
+train = Train.new( passengers, {destination: 'New York', number_of_engines: 4, caboose: true, number_of_cars: 5})
+
+puts "Destination: #{train.destination}"
+puts "Cars: #{train.number_of_cars}"
+puts "Caboose: #{train.caboose}"
+puts "Passengers: #{passengers}"

So, the destination seems wrong, as well as Cars, Caboose, and Passengers.

If your definition for train is Struct.new(:destination, :number_of_cars,
:caboose, :number_of_engine) then what are you sending in?

Train = Struct.new(:destination, :number_of_cars, :caboose, :number_of_engine)

There isn't a place for passengers.

And to simplify things, let's change

train = Train.new( passengers, {destination: 'New York', number_of_engines: 4, caboose: true, number_of_cars: 5})

to

train = Train.new( passengers, 'New York', 4, true, 5)

—
Reply to this email directly or view it on GitHubhttps://github.com//pull/14/files#r8868170
.

Robert Jewell
1.914.400.5219

puts "Engines: #{train.number_of_engines}"



=begin
puts 'train specifications:'
description.each do |key, value|
puts "#{key}: #{value}"
end

puts 'train destination:'
destination.each do |key, value|
puts "#{key}: #{value}"
end

puts 'Passenger\'s name'
bill.name.each do |key, value|
puts "#{key}: #{value}"
end

puts 'Bill\'s destination'
bill.destination.each do |key, value|
puts "#{key}: #{value}"
end

puts 'Bill\'s train specifications'
bill.description.each do |key, value|
puts "#{key}: #{value}"
end
=end