[Solved] What does the Ruby operator =~ do when used like string =~ /pattern/? — Ans: Returns the index where the pattern starts in the string or nil if not found | Ruby

Ruby - Regular Expressions

What does the Ruby operator =~ do when used like string =~ /pattern/?

ASplits the string into an array based on the pattern

BReturns true if the pattern is found, false otherwise

CReplaces the pattern in the string with another string

DReturns the index where the pattern starts in the string or nil if not found

Step-by-Step Solution

Solution:

Step 1: Understand the operator's purpose
The =~ operator checks if a regex pattern matches anywhere in the string.
Step 2: Know the return value
It returns the index of the first match or nil if no match is found.
Final Answer:
Returns the index where the pattern starts in the string or nil if not found -> Option D
Quick Check:
=~ returns index or nil [OK]

Quick Trick: Remember: =~ returns index or nil, not true/false [OK]

Common Mistakes:

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What does the Ruby operator =~ do when used like string =~ /pattern/?