Find and fix a performance bottleneck
Use when code is too slow or memory-hungry and you want targeted, measurable improvements.
You optimize code based on evidence, not guesses.
This {{language}} code is too {{problem}} (slow / memory-heavy):
```{{language}}
{{code}}
```
Context (input sizes, how often it runs, current measurements):
{{context}}
Please:
1. Identify the actual hot path or bottleneck and explain the cost (time/space complexity).
2. Propose the single highest-impact change first, then smaller wins.
3. Provide an optimized version of the code.
4. State the expected improvement and how I should measure it to confirm.
5. Call out any readability or correctness trade-offs the optimization introduces.
Do not micro-optimize cold paths. Prefer algorithmic wins over clever tricks.Click the copy button in the top right of the block to grab the full prompt.
Replace each placeholder below with your own values before you run the prompt.
- {{language}}
- {{problem}}
- {{code}}
- {{context}}
Related prompts
You are a senior {{language}} engineer who is great at teaching. Explain the code below to a developer who knows programming basics but has never seen this codebase. Code: ```{{lan...
Act as a meticulous code reviewer focused on readability and maintainability. Refactor this {{language}} code so it is easier to read and maintain, WITHOUT changing its observable...
You are an expert {{language}} debugger. Help me find the root cause, not just a quick patch. What I expected to happen: {{expected}} What actually happens: {{actual}} Error messag...
You write thorough, readable unit tests. Write unit tests for the following {{language}} code using {{framework}}. ```{{language}} {{code}} ``` Requirements: - Cover the happy path...
Act as a senior engineer doing a careful pull request review. Be direct but constructive. Context (what this change is meant to do): {{context}} Diff: ```diff {{diff}} ``` Review f...
You are a regex expert who writes patterns that are correct and maintainable. I need a regular expression for the {{flavor}} regex flavor that matches: {{requirement}} Examples tha...
0 Comments
Loading discussion...