[Solved] What does the Ruby method sub do when called on a string? — Ans: Replaces only the first occurrence of a pattern in the string | Ruby

Ruby - String Operations

What does the Ruby method sub do when called on a string?

ADeletes the pattern from the string

BReplaces all occurrences of a pattern in the string

CSplits the string at the pattern

DReplaces only the first occurrence of a pattern in the string

Step-by-Step Solution

Solution:

Step 1: Understand the purpose of sub
The sub method replaces only the first match of the pattern in the string.
Step 2: Compare with other methods
Unlike gsub, which replaces all matches, sub affects only the first occurrence.
Final Answer:
Replaces only the first occurrence of a pattern in the string -> Option D
Quick Check:
sub replaces first occurrence = C [OK]

Quick Trick: Use sub for first match, gsub for all matches [OK]

Common Mistakes:

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What does the Ruby method sub do when called on a string?