[Solved] Examine the Ruby code below:arr = [5, nil, 8, nil, 10] arr.compact puts arr.inspectWhy does the output still include nil values? | Ruby

Ruby - Arrays

Examine the Ruby code below:

arr = [5, nil, 8, nil, 10]
arr.compact
puts arr.inspect

Why does the output still include nil values?

ABecause <code>compact</code> only removes <code>nil</code> values if called with a bang (<code>compact!</code>).

BBecause <code>compact</code> returns a new array and does not modify <code>arr</code> in place.

CBecause <code>puts</code> does not display arrays correctly.

DBecause <code>arr</code> contains frozen elements that cannot be removed.

Step-by-Step Solution

Solution:

Step 1: Understand compact behavior
compact returns a new array without nil values but does not change the original array.
Step 2: Check original array
Since arr.compact is called without assignment, the original arr remains unchanged.
Step 3: Analyze other options
compact! modifies in place but is not used here.
puts correctly displays arrays.
Frozen elements are unrelated.
Final Answer:
Because compact returns a new array and does not modify arr in place. -> Option B
Quick Check:
Assign arr = arr.compact to remove nils from original [OK]

Quick Trick: compact returns new array; original unchanged unless reassigned [OK]

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