Developers frequently change the type of a program element and update all its references for performance, security, concurrency,library migration, or better maintainability. Despite type changes being a common program transformation, it is the least automated and the least studied. With this knowledge gap, researchers miss opportunities to improve the state of the art in automation for software evolution, tool builders do not invest resources where automation is most needed, language and library designers can-not make informed decisions when introducing new types, and developers fail to use common practices when changing types. To fill this gap, we present the first large-scale and most fine-grained empirical study on type changes in Java. We develop state-of-the-art tools to statically mine 297,543 type changes and their subsequent code adaptations from a diverse corpus of 129 Java projects containing 416,652 commits. With this rich data set we answer research questions about the practice of type changes. Among others, we found that type changes are actually more common than renaming,but the current research and tools for type changes are inadequate.Based on our extensive and reliable data, we present actionable,empirically-justified implications.
Fri 13 NovDisplayed time zone: (UTC) Coordinated Universal Time change
01:00 - 01:30 | |||
01:00 2mTalk | A Randomized Controlled Trial on the Effects of Embedded Computer Language Switching Research Papers P. Merlin Uesbeck University of Nevada at Las Vegas, USA, Cole S. Peterson University of Nebraska-Lincoln, USA, Bonita Sharif University of Nebraska-Lincoln, USA, Andreas Stefik University of Nevada at Las Vegas, USA DOI | ||
01:03 1mTalk | BugsInPy: A Database of Existing Bugs in Python Programs to Enable Controlled Testing and Debugging Studies Tool Demos Ratnadira Widyasari Singapore Management University, Singapore, Sheng Qin Sim Singapore Management University, Singapore, Camellia Lok Singapore Management University, Singapore, Haodi Qi Singapore Management University, Singapore, Jack Phan Singapore Management University, Singapore, Qijin Tay Singapore Management University, Singapore, Constance Tan Singapore Management University, Singapore, Fiona Wee Singapore Management University, Singapore, Jodie Ethelda Tan Singapore Management University, Singapore, Yuheng Yieh Singapore Management University, Singapore, Brian Goh Singapore Management University, Singapore, Ferdian Thung Singapore Management University, Hong Jin Kang Singapore Management University, Singapore, Thong Hoang Singapore Management University, Singapore, David Lo Singapore Management University, Eng Lieh Ouh Singapore Management University, Singapore DOI | ||
01:05 1mTalk | Do Code Review Measures Explain the Incidence of Post-Release Defects? Case Study Replications and Bayesian Networks Journal First Andrey Krutauz Concordia University, Tapajit Dey Lero - The Irish Software Research Centre and University of Limerick, Peter Rigby Concordia University, Montreal, Canada, Audris Mockus University of Tennessee - Knoxville | ||
01:07 1mTalk | On the Naturalness of Hardware Descriptions Research Papers Jaeseong Lee University of Texas at Austin, USA, Pengyu Nie University of Texas at Austin, USA, Junyi Jessy Li University of Texas at Austin, USA, Milos Gligoric University of Texas at Austin DOI | ||
01:09 1mTalk | Understanding Build Issue Resolution in Practice: Symptoms and Fix Patterns Research Papers Yiling Lou Peking University, China, Zhenpeng Chen Peking University, China, Yanbin Cao Peking University, China, Dan Hao Peking University, China, Lu Zhang Peking University, China DOI | ||
01:11 1mTalk | Understanding Type Changes in Java Research Papers Ameya Ketkar Oregon State University, USA, Nikolaos Tsantalis Concordia University, Canada, Danny Dig University of Colorado Boulder, USA DOI Pre-print Media Attached | ||
01:13 17mTalk | Conversations on Empirical 2 Paper Presentations Cole S. Peterson University of Nebraska-Lincoln, USA, Pengyu Nie University of Texas at Austin, USA, Ratnadira Widyasari Singapore Management University, Singapore, Peter Rigby Concordia University, Montreal, Canada, Yiling Lou Peking University, China, M: Kelly Blincoe University of Auckland | ||