Solution:Step 1: Filter h2 keys with values > 10Use select { |k, v| v > 10 } to keep only keys with values greater than 10.Step 2: Update h1 with filtered h2Use update to modify h1 in place with the filtered hash.Step 3: Check other optionsmerge! also updates but update is clearer; merge returns new

[Solved] You have two hashes:h1 = {a: 1, b: 2, c: 3}h2 = {b: 20, d: 4}You want to update h1 with h2 but only keep keys from h2 that have values greater than 10. Which code correctly does this? | Ruby

Ruby - Hashes

You have two hashes:

h1 = {a: 1, b: 2, c: 3}

h2 = {b: 20, d: 4}

You want to update h1 with h2 but only keep keys from h2 that have values greater than 10. Which code correctly does this?

Ah1.update(h2.select { |k, v| v > 10 })

Bh1.update(h2.reject { |k, v| v > 10 })

Ch1.merge(h2.select { |k, v| v > 10 })

Dh1.replace(h2.select { |k, v| v > 10 })

Step-by-Step Solution

Solution:

Step 1: Filter h2 keys with values > 10
Use select { |k, v| v > 10 } to keep only keys with values greater than 10.
Step 2: Update h1 with filtered h2
Use update to modify h1 in place with the filtered hash.
Step 3: Check other options
merge! also updates but update is clearer; merge returns new hash and does not modify h1.
Final Answer:
h1.update(h2.select { |k, v| v > 10 }) -> Option A
Quick Check:
Filter then update original hash [OK]

Quick Trick: Filter with select, then update original hash [OK]

Common Mistakes:

MISTAKES

Using merge instead of update (does not modify original)
Not filtering keys before update
Using reject incorrectly

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More Ruby Quizzes

You have two hashes:

Step 1: Filter `h2` keys with values > 10

Step 2: Update `h1` with filtered `h2`

Step 3: Check other options

Final Answer:

Quick Check:

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