Hash as named parameters pattern in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a method that accepts a hash as named parameters.

Ruby

def greet(options = {})
  puts "Hello, #{options[:name]}!"
end

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

A[

B(

C.

D{

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of square brackets to access hash keys.

Trying to access hash keys without brackets or dot notation.

Use square brackets to access the hash key :name inside the options hash.

2fill in blank

medium

Complete the code to call the greet method with a name parameter.

Ruby

greet([1]: "Alice"})

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

Aname

Bname:

C"name"

D:name

Attempts:

3 left

💡 Hint

Common Mistakes

Using :name as a symbol key inside the hash literal incorrectly.

Using quotes around the key name.

When passing named parameters as a hash, use the key with a colon after it, like name: "Alice".

3fill in blank

hard

Fix the error in the method definition to correctly accept named parameters as a hash.

Ruby

def greet([1])
  puts "Hello, #{options[:name]}!"
end

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

Aoptions = {}

Bname:

Cname

Dparams

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to destructure named parameters without default hash.

Using a single symbol parameter instead of a hash.

To accept named parameters as a hash, define the method with an optional hash parameter like options = {}.

4fill in blank

hard

Complete the code to create a hash from named parameters and access a value.

Ruby

def info([1] = {})
  age = params[:age]
  puts "Age is #{age}"
end

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

Aparams

B.

C[

Dparams = {}

Attempts:

3 left

💡 Hint

Common Mistakes

Using dot notation to access hash keys instead of square brackets.

Not providing a default empty hash for the parameter.

Define the method parameter as params = {} and access the :age key with square brackets.

5fill in blank

hard

Fill all three blanks to define a method with named parameters and print a greeting.

Ruby

def greet_user([1] = {})
  name = [2][:name]
  puts "Welcome, [3]!"
end

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

Aparams

Cname

Doptions

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names inconsistently.

Not accessing the hash key correctly.

Define the parameter as options = {}, access options[:name], and print the variable name.