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<Understanding Tail Recursion ⁄ >




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You may have heard of Tail Recursion before, in fact, you may have even written tail recursive functions before without even knowing it. Even so, why should you care? Safety. Functional programming relies on recursive functions heavily since imperative looping structures are frowned upon. However, recursion chews up a valuable and limited resource - the stack - and can lead to an unrecoverable type of CLR error: the dreaded StackOverflow. Tail Recursion however is a form of recursion that doesn't use any stack space, and thus is a way to use recursion safely.

Understanding tail recursion is crucial for writing efficient and safe functional code.



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