Given a hash scores = { alice: 10, bob: 15, carol: 7 }, how can you use an iterator to create a new hash with only scores greater than 8?

hard📝 Application Q15 of 15

Ruby - Loops and Iteration

Given a hash scores = { alice: 10, bob: 15, carol: 7 }, how can you use an iterator to create a new hash with only scores greater than 8?

Ascores.map { |name, score| score > 8 }

Bscores.each { |name, score| score > 8 }

Cscores.select { |name, score| score > 8 }

Dscores.filter { |name, score| score < 8 }

Step-by-Step Solution

Solution:

Step 1: Understand the goal
We want a new hash with only entries where the score is greater than 8.
Step 2: Choose the right iterator method
select filters a hash by condition and returns a new hash with matching pairs.
Step 3: Check each option
scores.select { |name, score| score > 8 } uses select with correct condition. scores.each { |name, score| score > 8 } uses each which returns original hash, not filtered. scores.map { |name, score| score > 8 } uses map which returns an array of booleans. scores.filter { |name, score| score < 8 } filters for scores less than 8, opposite of requirement.
Final Answer:
scores.select { |name, score| score > 8 } -> Option C
Quick Check:
Use select to filter hash = A [OK]

Quick Trick: Use select with condition to filter hashes [OK]

Common Mistakes:

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