Say it like this
- This problem calls for recursion.
- Let's solve this recursively.
- Watch out for infinite recursion.
Use it at work
Code review
- This recursion could overflow the stack with big inputs.
- Can we use a loop instead of recursion?
Explaining
- The function uses recursion to walk the folder tree.
- Every recursion needs a base case.
In an interview
- Can you solve this with recursion?
- What's the base case for this recursion?
Don't say this
Recursion is a technique used on functions, not entire systems. Use refactor or redesign instead.
Practice
Try it
4 quick exercises
1. The function uses _______ to calculate the factorial by calling itself with a smaller value each time.
2. Which sentence uses recursion incorrectly?
3. How would you most naturally explain a recursive solution to a colleague?
4. Rewrite this using the word recursion: 'When a function calls itself with simpler data until it reaches a stopping point, that is a way to solve problems.'
Say it out loud
Phrase 1 of 3
"This problem calls for recursion."
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More about recursion
Real examples(3)
- in a technical interview
"Can you implement this using recursion instead of a loop?"
- in a code review
"The recursion depth looks problematic here. Let's add a base case to prevent stack overflow."
- in a team meeting
"We could use recursion to traverse this nested JSON structure, but iteration might be clearer for the team."
More mistakes(2)
Handle with care. Do not use recursion to mean simply repeating or looping. Recursion specifically means a function calling itself with modified parameters.
- ✕I will recursion this file tomorrow.✓I will review this file tomorrow.
Recursion is not a verb meaning to review or repeat. Use review, check, or analyze instead.
- ✕Our algorithm uses too much recursion.✓Our algorithm has excessive recursion depth.
Say recursion depth, recursive calls, or recursive levels to describe the problem accurately.
Other forms(3)
- recursion noun
"Tail recursion is an optimization technique."
- recursive adjective
"The recursive function calls itself three times."
- recursively adverb
"We can solve this recursively or iteratively."
Often used with(5)
- tail recursion · A specific form of recursion where the recursive call is the last operation, enabling compiler optimization.
- infinite recursion · A problem where recursive calls never reach the base case, causing a stack overflow error.
- base case · The stopping condition in recursion that prevents infinite calls.
- recursive function · A function that calls itself as part of its implementation.
- recursion depth · The number of nested recursive calls in the call stack.
Similar words(2)
- self-reference · Broader term; recursion is specifically self-calling functions, whereas self-reference is any form of self-relation.
- recursive call · Refers to the actual function call within the function, not the technique itself.
Opposites(3)
- iteration
- loops
- sequential processing
Questions(5)
- What does recursion mean in software engineering?
- Recursion is a programming technique where a function calls itself to solve a problem by breaking it into smaller identical subproblems. The function continues calling itself with simpler input until it reaches a base case, which stops the recursion and returns a result.
- How do you use recursion in a sentence at work?
- You can say: 'We should solve this problem using recursion' or 'The recursive function traverses the entire tree.' Use recursion as a noun to describe the technique, and recursive as an adjective to describe functions that use this technique.
- Is recursion formal or informal?
- Recursion is a neutral technical term used in both formal and informal settings. It appears in interviews, documentation, code reviews, and casual team conversations about programming approaches.
- What is the difference between recursion and iteration?
- Recursion is when a function calls itself, while iteration uses loops to repeat code. Recursion is often more elegant for certain problems like tree traversal, but iteration is usually more efficient in terms of memory and speed.
- Why is a base case important in recursion?
- The base case is the stopping condition that prevents infinite recursion. Without it, the recursive function would call itself endlessly until the program crashes with a stack overflow error.
