Ruby - Regular Expressions
What is the output of this Ruby code?
text = 'Order number: 12345' match = text.match(/number: (\d+)/) puts match[1]
What is the output of this Ruby code?
medium📝 Predict Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the regex and match
The regex captures digits (\d+) after 'number: ' in a capture group.Step 2: Extract captured group
match[1] returns the first capture group, which is '12345'.Final Answer:
12345 -> Option DQuick Check:
Capture group returns digits '12345' [OK]
Quick Trick: Use \d+ to capture digits in regex [OK]
Common Mistakes:
- Accessing match[0] which returns full match
- Forgetting to escape backslash in regex
- Assuming match returns nil if no capture group
Master "Regular Expressions" in Ruby
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