This volume constitutes the pre-proceedings of the 28th International Workshop on Functional and Logic Programming (WFLP 2020), organized by the University of Bologna, Italy, as part of Bologna Federated Conference on Programming Languages 2020. The international Workshop on Functional and (constraint) Logic Programming (WFLP) aims at bringing together researchers, students, and practitioners interested in functional programming, logic programming, and their integration. WFLP has a reputation for being a lively and friendly forum, and it is open for presenting and discussing work in progress, technical contributions, experience reports, experiments, reviews, and system descriptions.

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第 28 届函数和逻辑编程国际研讨会 (WFLP 2020) 的预录

本卷构成了由意大利博洛尼亚大学组织的第 28 届函数和逻辑编程国际研讨会 (WFLP 2020) 的前序，作为 2020 年博洛尼亚编程语言联合会会议的一部分。 ) 逻辑编程 (WFLP) 旨在汇集对函数式编程、逻辑编程及其集成感兴趣的研究人员、学生和从业者。WFLP 以活跃和友好的论坛而闻名，它对展示和讨论正在进行的工作、技术贡献、经验报告、实验、评论和系统描述持开放态度。