Block parameters in Ruby - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to pass the block parameter correctly.

Ruby

5.times do |[1]|
  puts [1]
end

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Aindex

Bitem

Cnum

Di

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name not inside the pipes.

Leaving the block parameter empty.

The block parameter index receives the current iteration number.

2fill in blank

medium

Complete the code to use block parameters to sum numbers.

Ruby

sum = 0
[1, 2, 3].each do |[1]|
  sum += [1]
end
puts sum

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Avalue

Bnum

Celement

Ditem

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name not matching the block parameter.

Trying to use the array name inside the block instead of the parameter.

The block parameter value represents each element in the array.

3fill in blank

hard

Fix the error in the block parameter to print each key and value.

Ruby

{a: 1, b: 2}.each do |[1]|
  puts "#{ [1][0] }: #{ [1][1] }"
end

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Akey

Bpair

Cvalue

Ditem

Attempts:

3 left

💡 Hint

Common Mistakes

Using separate parameters without parentheses.

Trying to access key and value directly without indexing.

The block parameter pair holds each key-value array from the hash.

4fill in blank

hard

Fill both blanks to correctly unpack key and value in the block parameters.

Ruby

{x: 10, y: 20}.each do |[1], [2]|
  puts "Key: #{ [1] }, Value: #{ [2] }"
end

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Akey

Bvalue

Ck

Dv

Attempts:

3 left

💡 Hint

Common Mistakes

Using only one block parameter when two are needed.

Mixing up the order of key and value.

The block parameters k and v unpack the key and value from the hash.

5fill in blank

hard

Fill all three blanks to create a hash with word lengths using block parameters and condition.

Ruby

words = ["apple", "bee", "cat"]
lengths = {}
words.each do |[1]|
  [2] = [1].[3]
  lengths[[1]] = [2] if [2] > 3
end

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Aword

Blen

Clen(word)

Dlength

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect variable names.

Not matching the condition with the value.

The block parameter word receives each word from the array. len stores the length computed using the length method. The condition filters words longer than 3 characters to build the hash.