Why conventions matter in Ruby - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print a greeting message using a conventional Ruby method.

Ruby

def greet
  puts [1]
end
greet

Drag options to blanks, or click blank then click option'

Aprint "Hello, world!"

B"Hello, world!"

Cecho "Hello, world!"

Dconsole.log("Hello, world!")

Attempts:

3 left

💡 Hint

Common Mistakes

Using print without quotes

Using JavaScript syntax like console.log

In Ruby, puts prints a string with a newline. The string must be in quotes.

2fill in blank

medium

Complete the code to define a class with a conventional Ruby naming style.

Ruby

class [1]
  def initialize(name)
    @name = name
  end
end

Drag options to blanks, or click blank then click option'

Aperson

BpersonClass

Cperson_class

DPerson

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase or snake_case for class names

Ruby classes use CamelCase starting with a capital letter by convention.

3fill in blank

hard

Fix the error in the method name to follow Ruby conventions.

Ruby

def [1](age)
  puts "Age is #{age}"
end

Drag options to blanks, or click blank then click option'

Aget_age

BGetAge

CgetAge

DGETAGE

Attempts:

3 left

💡 Hint

Common Mistakes

Using CamelCase or uppercase for method names

Ruby method names use snake_case with lowercase letters and underscores.

4fill in blank

hard

Fill both blanks to create a hash with symbol keys using Ruby conventions.

Ruby

person = { [1]: "Alice", [2]: 30 }

Drag options to blanks, or click blank then click option'

A:name

Bname

C:age

Dage

Attempts:

3 left

💡 Hint

Common Mistakes

Using strings or bare words as keys without colon

Ruby uses symbols (starting with :) as keys in hashes by convention.

5fill in blank

hard

Fill all three blanks to write a conventional Ruby loop that prints numbers 1 to 3.

Ruby

3.times do |[1]|
  puts [2] + [3]
end

Drag options to blanks, or click blank then click option'

Ai

C1

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names

Not adding 1 to start counting at 1

The block variable i counts from 0, so adding 1 prints numbers 1 to 3.