[Solved] What does the Ruby dig method do when used on a nested hash or array? — Ans: It safely accesses nested elements and returns nil if any key or index is... | Ruby

Ruby - Hashes

What does the Ruby dig method do when used on a nested hash or array?

AIt safely accesses nested elements and returns nil if any key or index is missing.

BIt deletes the nested element at the given keys or indexes.

CIt converts the nested hash or array into a flat array.

DIt raises an error if any nested key or index is missing.

Step-by-Step Solution

Solution:

Step 1: Understand the purpose of dig
The dig method is designed to access nested data structures like hashes or arrays without raising errors if a key or index is missing.
Step 2: Behavior on missing keys or indexes
If any part of the nested path does not exist, dig returns nil instead of raising an error.
Final Answer:
It safely accesses nested elements and returns nil if any key or index is missing. -> Option A
Quick Check:
dig returns nil on missing keys/indexes [OK]

Quick Trick: Remember: dig returns nil if path missing, no error [OK]

Common Mistakes:

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What does the Ruby dig method do when used on a nested hash or array?