[Solved] What is the output of the following Ruby code? text = "foo bar foo bar" result = text.sub('foo', 'baz') puts result | Ruby

Ruby - String Operations

What is the output of the following Ruby code?

text = "foo bar foo bar"
result = text.sub('foo', 'baz')
puts result

Afoo bar foo bar

Bbaz bar foo bar

Cfoo bar baz bar

Dbaz bar baz bar

Step-by-Step Solution

Solution:

Step 1: Understand sub behavior on the string
sub replaces only the first occurrence of 'foo' with 'baz'.
Step 2: Apply replacement to the string
The first 'foo' becomes 'baz', the rest remains unchanged, so the string is "baz bar foo bar".
Final Answer:
baz bar foo bar -> Option B
Quick Check:
sub replaces first occurrence only = D [OK]

Quick Trick: sub changes only first match, leaves others intact [OK]

Common Mistakes:

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