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    <abstract>Coding remains one of the most fundamental modes of interaction between humans and machines. With the rapid advancement of Large Language Models (LLMs), code generation capabilities have begun to significantly reshape programming practices. This development prompts a central question: Have LLMs transformed code style, and how can such transformation be characterized? In this paper, we present a pioneering study that investigates the impact of LLMs on code style, with a focus on naming conventions, complexity, maintainability, and similarity. By analyzing code from over 20,000 GitHub repositories linked to arXiv papers published between 2020 and 2025, we identify measurable trends in the evolution of coding style that align with characteristics of LLM-generated code. For instance, the proportion of snake_case function names in Python code increased from 40.7% in Q1 2023 to 49.8% in Q3 2025. Furthermore, we investigate how LLMs approach algorithmic problems by examining their reasoning processes. Our experimental results may provide the first large-scale empirical evidence that LLMs affect real-world programming style.</abstract>
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%0 Conference Proceedings
%T code-transformed: The Influence of Large Language Models on Code
%A Xu, Yuliang
%A Huang, Siming
%A Geng, Mingmeng
%A Wan, Yao
%A Shi, Xuanhua
%A Chen, Dongping
%Y Demberg, Vera
%Y Inui, Kentaro
%Y Marquez, Lluís
%S Findings of the Association for Computational Linguistics: EACL 2026
%D 2026
%8 March
%I Association for Computational Linguistics
%C Rabat, Morocco
%@ 979-8-89176-386-9
%F xu-etal-2026-code
%X Coding remains one of the most fundamental modes of interaction between humans and machines. With the rapid advancement of Large Language Models (LLMs), code generation capabilities have begun to significantly reshape programming practices. This development prompts a central question: Have LLMs transformed code style, and how can such transformation be characterized? In this paper, we present a pioneering study that investigates the impact of LLMs on code style, with a focus on naming conventions, complexity, maintainability, and similarity. By analyzing code from over 20,000 GitHub repositories linked to arXiv papers published between 2020 and 2025, we identify measurable trends in the evolution of coding style that align with characteristics of LLM-generated code. For instance, the proportion of snake_case function names in Python code increased from 40.7% in Q1 2023 to 49.8% in Q3 2025. Furthermore, we investigate how LLMs approach algorithmic problems by examining their reasoning processes. Our experimental results may provide the first large-scale empirical evidence that LLMs affect real-world programming style.
%U https://aclanthology.org/2026.findings-eacl.290/
%P 5462-5490

Markdown (Informal)

[code-transformed: The Influence of Large Language Models on Code](https://aclanthology.org/2026.findings-eacl.290/) (Xu et al., Findings 2026)

• code-transformed: The Influence of Large Language Models on Code (Xu et al., Findings 2026)

ACL

• Yuliang Xu, Siming Huang, Mingmeng Geng, Yao Wan, Xuanhua Shi, and Dongping Chen. 2026. code-transformed: The Influence of Large Language Models on Code. In Findings of the Association for Computational Linguistics: EACL 2026, pages 5462–5490, Rabat, Morocco. Association for Computational Linguistics.