Ruby - Enumerable and Collection Processing
Which Ruby method returns
true only if all elements in an array satisfy a condition?Which Ruby method returns true only if all elements in an array satisfy a condition?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Identify the method for all elements
Theall?method returns true only if every element in the array meets the condition.Step 2: Differentiate from other predicates
any?checks for at least one element,none?checks if no elements meet the condition, andone?is not a standard Ruby method.Final Answer:
all? -> Option AQuick Check:
all? = true if all elements match [OK]
Quick Trick: all? requires every element to satisfy condition [OK]
Common Mistakes:
- Mixing all? with any?
- Using none? instead of all?
- Assuming one? is a Ruby method
Master "Enumerable and Collection Processing" in Ruby
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