Ruby - Regular Expressions
What will be the output of this Ruby code?
text = "abc123xyz"
matches = text.scan(/\d+/)
puts matches.join(",")What will be the output of this Ruby code?
medium📝 Predict Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand scan with regex \d+
The regex \d+ matches one or more digits. scan returns all such matches as an array.Step 2: Analyze the code output
text.scan(/\d+/) returns ["123"]. Joining with comma results in "123".Final Answer:
123 -> Option AQuick Check:
scan with digits returns "123" [OK]
Quick Trick: scan returns array of matches; join converts to string [OK]
Common Mistakes:
- Expecting letters instead of digits
- Confusing scan with match
- Thinking output is original string
Master "Regular Expressions" in Ruby
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