Bird
0
0

Which Ruby method returns true if at least one element in a collection meets a condition?

easy📝 Conceptual Q11 of 15
Ruby - Enumerable and Collection Processing

Which Ruby method returns true if at least one element in a collection meets a condition?

A<code>all?</code>
B<code>any?</code>
C<code>none?</code>
D<code>each?</code>
Step-by-Step Solution
Solution:

  1. Step 1: Understand the meaning of any?

    any? returns true if at least one element satisfies the condition.

  2. Step 2: Compare with other methods

    all? requires all elements to satisfy, none? requires none to satisfy, and each? is not a Ruby predicate method.

  3. Final Answer:

    any? -> Option B

  4. Quick Check:

    any? = at least one true [OK]
Quick Trick: any? means at least one true element [OK]
Common Mistakes:
  • Confusing any? with all?
  • Thinking none? means at least one
  • Using each? which is not a predicate

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Ruby Quizzes
Blocks, Procs, and Lambdas - Yield to execute blocks - Quiz 12easy Classes and Objects - Self keyword behavior - Quiz 13medium Enumerable and Collection Processing - Sort_by for custom sorting - Quiz 15hard Enumerable and Collection Processing - Reduce/inject for accumulation - Quiz 6medium Enumerable and Collection Processing - Why Enumerable is Ruby's most powerful module - Quiz 3easy Enumerable and Collection Processing - Flat_map for nested flattening - Quiz 4medium Error Handling - Rescue modifier (inline form) - Quiz 3easy Error Handling - Raise for throwing errors - Quiz 10hard File IO - IO modes (r, w, a) - Quiz 12easy File IO - File.write for writing - Quiz 6medium