Using an LLM to Help With Code Understanding
Proceedings of the IEEE/ACM 46th International Conference on Software Engineering(2023)
摘要
Understanding code is challenging, especially when working in new and complex
development environments. Code comments and documentation can help, but are
typically scarce or hard to navigate. Large language models (LLMs) are
revolutionizing the process of writing code. Can they do the same for helping
understand it? In this study, we provide a first investigation of an LLM-based
conversational UI built directly in the IDE that is geared towards code
understanding. Our IDE plugin queries OpenAI's GPT-3.5-turbo model with four
high-level requests without the user having to write explicit prompts: to
explain a highlighted section of code, provide details of API calls used in the
code, explain key domain-specific terms, and provide usage examples for an API.
The plugin also allows for open-ended prompts, which are automatically
contextualized to the LLM with the program being edited. We evaluate this
system in a user study with 32 participants, which confirms that using our
plugin can aid task completion more than web search. We additionally provide a
thorough analysis of the ways developers use, and perceive the usefulness of,
our system, among others finding that the usage and benefits differ between
students and professionals. We conclude that in-IDE prompt-less interaction
with LLMs is a promising future direction for tool builders.
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