[Solved] Which of the following is the correct syntax to iterate over each key-value pair in a Ruby hash h? — Ans: h.each { |key, value| puts key + value } | Ruby

Ruby - Hashes

Which of the following is the correct syntax to iterate over each key-value pair in a Ruby hash h?

A<code>h.each(key, value) { puts key, value }</code>

B<code>h.each { |key, value| puts key + value }</code>

C<code>h.each do |key value| puts key, value end</code>

D<code>h.each { key, value -> puts key + value }</code>

Step-by-Step Solution

Solution:

Step 1: Identify correct block syntax for each
The correct syntax uses curly braces or do-end with block parameters separated by a comma inside pipes: { |key, value| ... }.
Step 2: Check each option
h.each { |key, value| puts key + value } uses correct syntax with pipes and comma. Others have syntax errors or wrong block format.
Final Answer:
h.each { |key, value| puts key + value } -> Option B
Quick Check:
Correct block syntax = h.each { |key, value| puts key + value } [OK]

Quick Trick: Use pipes and commas inside block for key-value pairs [OK]

Common Mistakes:

Master "Hashes" in Ruby

9 interactive learning modes - each teaches the same concept differently

More Ruby Quizzes

Which of the following is the correct syntax to iterate over each key-value pair in a Ruby hash h?