Ruby - Blocks, Procs, and Lambdas
Why do closures in Ruby capture variables by reference rather than by value?
Why do closures in Ruby capture variables by reference rather than by value?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand closure variable capture
Closures capture variables by reference so they see the current value when called, not the value at creation.Step 2: Reason why this is useful
This allows closures to reflect changes in variables made after closure creation.Final Answer:
To reflect the latest value of variables when the closure is called -> Option AQuick Check:
Closures capture by reference to track variable changes [OK]
Quick Trick: Closures see variable changes by referencing variables [OK]
Common Mistakes:
- Thinking closures copy variable values at creation
- Believing Ruby lacks variable copying
- Confusing immutability with variable capture
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