[Solved] You have two hashes representing inventory counts:stock1 = {apples: 10, oranges: 5}stock2 = {oranges: 7, bananas: 3}How can you create a new hash that sums the counts for overlapping keys? | Ruby

Ruby - Hashes

You have two hashes representing inventory counts:

stock1 = {apples: 10, oranges: 5}

stock2 = {oranges: 7, bananas: 3}

How can you create a new hash that sums the counts for overlapping keys?

AUse <code>stock1 + stock2</code>

BUse <code>stock1.update(stock2)</code>

CUse <code>stock1.merge(stock2)</code>

DUse <code>stock1.merge(stock2) { |key, old, new| old + new }</code>

Step-by-Step Solution

Solution:

Step 1: Understand merge with block
Using merge with a block lets you define how to combine values for duplicate keys.
Step 2: Apply block to sum values
The block { |key, old, new| old + new } sums counts for overlapping keys like :oranges.
Final Answer:
Use stock1.merge(stock2) { |key, old, new| old + new } -> Option D
Quick Check:
merge with block combines values for duplicate keys [OK]

Quick Trick: merge with block customizes value merging [OK]

Common Mistakes:

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