Which of the following is the correct syntax to check if none of the elements in array nums are negative?

easy📝 Syntax Q3 of 15

Ruby - Enumerable and Collection Processing

Which of the following is the correct syntax to check if none of the elements in array nums are negative?

Anums.any? { |n| n < 0 }

Bnums.none { |n| n < 0 }

Cnums.all? { |n| n < 0 }

Dnums.none? { |n| n < 0 }

Step-by-Step Solution

Solution:

Step 1: Recall the correct method name and syntax
The method to check if no elements satisfy a condition is none?, and it requires a block with the condition.
Step 2: Verify the block and method usage
nums.none? { |n| n < 0 } uses none? with a block checking for negative numbers, which is correct syntax.
Final Answer:
nums.none? { |n| n < 0 } -> Option D
Quick Check:
none? syntax requires question mark and block [OK]

Quick Trick: Use none? with block and question mark for correct syntax [OK]

Common Mistakes:

Master "Enumerable and Collection Processing" in Ruby

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Ruby Quizzes