Ruby - Functional Patterns in Ruby
What will this Ruby code print?
str = "hello" str.freeze puts str.frozen?
What will this Ruby code print?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Freeze the string
Calling freeze on str makes it immutable.Step 2: Check frozen state
Calling frozen? returns true if the object is frozen.Final Answer:
true -> Option CQuick Check:
freeze + frozen? = true [OK]
Quick Trick: Use frozen? to check if object is frozen [OK]
Common Mistakes:
- Expecting false after freeze
- Thinking frozen? raises error
- Confusing frozen? with freeze method
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