Which Ruby code snippet correctly replaces only the first occurrence of 'bird' with 'fish' in the string "bird bird bird" using sub?

easy📝 Syntax Q3 of 15

Ruby - String Operations

Which Ruby code snippet correctly replaces only the first occurrence of 'bird' with 'fish' in the string "bird bird bird" using sub?

A"bird bird bird".gsub('bird', 'fish')

B"bird bird bird".sub('bird', 'fish')

C"bird bird bird".sub(/bird/, 'fish').gsub('bird', 'fish')

D"bird bird bird".gsub(/bird/, 'fish').sub('bird', 'fish')

Step-by-Step Solution

Solution:

Step 1: Understand sub behavior
sub replaces only the first occurrence of the pattern.
Step 2: Analyze options
"bird bird bird".sub('bird', 'fish') uses sub directly on the string to replace the first 'bird' with 'fish'. "bird bird bird".gsub('bird', 'fish') uses gsub which replaces all occurrences. Options C and D combine sub and gsub unnecessarily.
Final Answer:
"bird bird bird".sub('bird', 'fish') -> Option B
Quick Check:
Only first 'bird' replaced [OK]

Quick Trick: Use sub to replace first occurrence only [OK]

Common Mistakes:

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