Ruby - Operators and Expressions
What does the Ruby operator
||= do when used like x ||= 10?What does the Ruby operator ||= do when used like x ||= 10?
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the ||= operator
The operator||=assigns the right side value only if the left side variable is nil or false.Step 2: Apply to example
Ifx ||= 10xis nil or false, it becomes 10; otherwise, it keeps its current value.Final Answer:
Assigns 10 to x only if x is nil or false -> Option CQuick Check:
Conditional assignment = Assign if nil/false [OK]
Quick Trick: ||= sets value only if variable is nil or false [OK]
Common Mistakes:
MISTAKES- Thinking ||= always assigns the value
- Confusing ||= with simple assignment =
- Assuming ||= assigns when variable is true
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