Ruby - Blocks, Procs, and Lambdas
Why does a
return inside a Proc cause the enclosing method to exit, but inside a lambda it does not?Why does a return inside a Proc cause the enclosing method to exit, but inside a lambda it does not?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Proc's return context
AProcshares the return context of the method where it is defined, so itsreturnexits that method.Step 2: Understand lambda's return context
Alambdabehaves like an independent function or method, so itsreturnexits only the lambda block, not the enclosing method.Final Answer:
Because Proc inherits return behavior from the method context, lambda acts like an independent function -> Option AQuick Check:
Return context difference = B [OK]
Quick Trick: Proc shares method return; lambda acts like function [OK]
Common Mistakes:
- Thinking syntax difference causes return behavior
- Assuming Proc ignores return
- Confusing implementation details
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