[Solved] What does a named capture group do in a PowerShell regex pattern like (?\d{4})? — Ans: Labels the matched part as 'year' for easy access later | PowerShell

PowerShell - Regular Expressions

What does a named capture group do in a PowerShell regex pattern like (?\d{4})?

AMatches only the first 4 characters of the string

BMakes the regex case-insensitive

CRepeats the pattern 4 times

DLabels the matched part as 'year' for easy access later

Step-by-Step Solution

Solution:

Step 1: Understand named capture syntax
The syntax (?pattern) labels the matched text as 'name'.
Step 2: Identify the purpose in the example
Here, (?\d{4}) captures 4 digits and labels them 'year'.
Final Answer:
Labels the matched part as 'year' for easy access later -> Option D
Quick Check:
Named capture = label matched text [OK]

Quick Trick: Look for (?pattern) to label matches [OK]

Common Mistakes:

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What does a named capture group do in a PowerShell regex pattern like (?\d{4})?