[Solved] What does a capture group do in a Ruby regular expression like /(\d{3})-(\d{2})/? — Ans: It saves parts of the matched text for later use. | Ruby

Ruby - Regular Expressions

What does a capture group do in a Ruby regular expression like /(\d{3})-(\d{2})/?

AIt repeats the pattern multiple times.

BIt saves parts of the matched text for later use.

CIt matches only digits without saving.

DIt ignores the matched text.

Step-by-Step Solution

Solution:

Step 1: Understand capture groups in regex
Capture groups are parts of a pattern enclosed in parentheses that save matched text.
Step 2: Analyze the example pattern
The pattern /(\d{3})-(\d{2})/ has two capture groups for three digits and two digits separated by a dash.
Final Answer:
It saves parts of the matched text for later use. -> Option B
Quick Check:
Capture groups = save matched parts [OK]

Quick Trick: Parentheses in regex save matched text as groups [OK]

Common Mistakes:

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