Ruby - Variables and Data Types
You want to create a local variable to store a user's age in Ruby. Which of these variable names follows best naming conventions and is clear to other programmers?
You want to create a local variable to store a user's age in Ruby. Which of these variable names follows best naming conventions and is clear to other programmers?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Check Ruby naming conventions for local variables
Local variables should start with lowercase letters or underscores and use underscores to separate words for clarity.Step 2: Evaluate each option for clarity and convention
'user_age' uses lowercase and underscores, making it clear and conventional. 'UserAge' starts uppercase (looks like constant), 'user-age' has invalid hyphen, 'userAge' uses camelCase which is less common in Ruby.Final Answer:
user_age -> Option DQuick Check:
Use lowercase with underscores for clear local variables [OK]
Quick Trick: Use lowercase and underscores for clear Ruby local variables [OK]
Common Mistakes:
- Using camelCase instead of snake_case
- Starting variable names with uppercase letters
- Using hyphens in variable names
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