You want to create a custom exception InvalidAgeError that triggers when age is less than 18. Which code correctly raises this exception inside a method check_age?
hard📝 Application Q8 of 15
Ruby - Error Handling
You want to create a custom exception InvalidAgeError that triggers when age is less than 18. Which code correctly raises this exception inside a method check_age?
Aclass InvalidAgeError < StandardError; end
def check_age(age)
raise InvalidAgeError, "Age must be 18 or older" if age < 18
end
Bclass InvalidAgeError < Exception; end
def check_age(age)
raise "InvalidAgeError" if age < 18
end
Cdef check_age(age)
if age < 18
throw InvalidAgeError
end
end
Dclass InvalidAgeError
end
def check_age(age)
raise InvalidAgeError.new("Too young") if age < 18
end
Step-by-Step Solution
Solution:
Step 1: Check correct class definition and inheritance
class InvalidAgeError < StandardError; end
def check_age(age)
raise InvalidAgeError, "Age must be 18 or older" if age < 18
end defines InvalidAgeError inheriting from StandardError, which is correct.
Step 2: Check raise usage inside method
class InvalidAgeError < StandardError; end
def check_age(age)
raise InvalidAgeError, "Age must be 18 or older" if age < 18
end raises InvalidAgeError with message if age < 18, which matches requirement.
Final Answer:
Option A code correctly raises InvalidAgeError when age < 18 -> Option A
Quick Check:
Define custom error and raise with message [OK]
Quick Trick:Raise custom error with message inside method [OK]
Common Mistakes:
Using throw instead of raise
Raising string instead of exception
Not inheriting from StandardError
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