Ruby - Regular Expressions
Which of the following is the correct Ruby regex syntax to match any lowercase letter?
Which of the following is the correct Ruby regex syntax to match any lowercase letter?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Understand character ranges in Ruby regex
Square brackets [] define a character class. "[a-z]" matches any lowercase letter from a to z.Step 2: Identify the correct lowercase letter range
"[a-z]" uses "[a-z]" which is the correct syntax. "[A-Z]" matches uppercase letters, "\\a-z" is invalid, and "[0-9]" matches digits.Final Answer:
"[a-z]" matches lowercase letters -> Option CQuick Check:
Lowercase letters = "[a-z]" [OK]
Quick Trick: Use [a-z] to match lowercase letters in regex [OK]
Common Mistakes:
- Using uppercase range [A-Z] instead of lowercase
- Incorrect escape like \a-z
- Confusing digits [0-9] with letters
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