Given the array arr = [false, nil, 0, "", [], true], which Ruby code snippet correctly filters out falsy values?

hard📝 Application Q8 of 15

Ruby - Operators and Expressions

Given the array arr = [false, nil, 0, "", [], true], which Ruby code snippet correctly filters out falsy values?

Afiltered = arr.reject { |v| v == false || v.nil? }

Bfiltered = arr.select { |v| v != false && !v.nil? }

Cfiltered = arr.select { |v| v }

Dfiltered = arr.reject { |v| !v }

Step-by-Step Solution

Solution:

Step 1: Recall Ruby truthy/falsy rules
Only false and nil are falsy; all other values are truthy.
Step 2: Understand select with block
select { |v| v } keeps elements where v is truthy.
Step 3: Analyze options
filtered = arr.select { |v| v } directly selects truthy values; others are more verbose or incorrect.
Final Answer:
filtered = arr.select { |v| v } -> Option C
Quick Check:
Test with falsy values filtered out [OK]

Quick Trick: Use select { |v| v } to keep only truthy values [OK]

Common Mistakes:

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