What do practitioners ask about code clone? A preliminary investigation of Stack Overflow

What do practitioners ask about code clone? A preliminary investigation of Stack Overflow

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  Software Engineering Laboratory,Department of Computer Science, Graduate School of Information Science and Technology, Osaka University What Do Practitioners Ask about Code Clone? A Preliminary Investigation of Stack Overflow Eunjong Choi1, Raula Gaikovina Kula2, Norihiro Yoshida2, Katsuro Inoue1 1Graduate School of Information Science and Technology, Osaka University, Japan 2Graduate School of Information Science, Nagoya University, Japan 1
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University 2 Very little is known about practitioner’s needs on the detection and analysis of code clones. Motivation of This Study researcher practitioners
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Stack Overflow (SO) 3
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University The Data That We Analyzed 4 from July 31, 2008 to July 31, 2012
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University The Data That We Analyzed 5 from July 31, 2008 to July 31, 2012 Choose keywords related code clones
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University The Data That We Analyzed 6 from July 31, 2008 to July 31, 2012 Choose keywords related code clones Select questions based on the chosen keywords 'code clone' 'code cloning' 'code redundancy' 'code duplicate' 'code duplication' 'duplicate code' 'duplicated code'
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University The Data That We Analyzed 7 from July 31, 2008 to July 31, 2012 Choose keywords related code clones Select questions based on the chosen keywords Manually validate 'code clone' 'code cloning' 'code redundancy' 'code duplicate' 'code duplication' 'duplicate code' 'duplicated code' 1,654 questions
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University The Data That We Analyzed 8 from July 31, 2008 to July 31, 2012 925 questions Choose keywords related code clones Select questions based on the chosen keywords Manually validate 'code clone' 'code cloning' 'code redundancy' 'code duplicate' 'code duplication' 'duplicate code' 'duplicated code' 1,654 questions
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University The Data That We Analyzed 9 from July 31, 2008 to July 31, 2012: 925 questions Choose keywords related code clones Select questions based on the chosen keywords Manually validate 'code clone' 'code cloning' 'code redundancy' 'code duplicate' 'code duplication' 'duplicate code' 'duplicated code'
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Research Question 1 • RQ1: What Kinds of Programming Languages/Techniques were Appeared in Questions on Clones? 10
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Methodology 11
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Methodology 12 Tags related to development techniques? Tags related to programming language ?
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Methodology 13
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Methodology 14 Tags related to development techniques? Tags related to programming language ?
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University 0 50 100 150 200 python ruby-on-rails .net javascript php jquery asp.net c++ java c# Finding (1/2) Tags related to programming language
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University 0 20 40 60 80 mvc architecture unit-testing generics dry design templates inheritance design-patterns refactoring Finding (2/2) Tags related to development techniques
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University 0 20 40 60 80 mvc architecture unit-testing generics dry design templates inheritance design-patterns refactoring Finding (2/2) The most frequently appeared tags in the questions are about object-oriented programming languages and web programming languages. Moreover, tags about clone management also frequently appear Tags related to development techniques
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Research Question 2 RQ2: Were Questions on Clones Asked by Trusted Practitioners? 18 Novice? Expert? Practitioners that are interested in handling code clones
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Methodology 19
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Finding 20 0 500 1,000 1,500 2,000 2,500 3,000 Reputations(Clone) Reputations(General) Asked Answered The average reputations of practitioners who asked and answered questions on clones, and other questions
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Finding 21 0 500 1,000 1,500 2,000 2,500 3,000 Reputations(Clone) Reputations(General) Asked Answered Practitioners who asked about clones are trusted by the others in SO. The average reputations of practitioners who asked and answered questions on clones, and other questions
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Discussion 22
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University 23 Discussion
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University 24 Discussion
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University 25 Discussion
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  Department of ComputerScience, Graduate School of Information Science and Technology, Osaka University Summary 26