Paul Krill
Editor at Large

Cloned code finder offered for Visual Studio

news
Aug 27, 20083 mins

Developers can analyze C# projects and find cloned code, which can lead to inconsistencies; capabilities for Visual Basic, .Net, and C++ to come in the next release

An open-source technology has been launched to help developers using Microsoft Visual Studio 2008 find duplicated code in their software projects.

Called Clone Detective for Visual Studio, the product allows developers to analyze C# projects for source code duplicated elsewhere. These duplicates can lead to inconsistencies and indicate poorly factored code, according to the Clone Detective Web page at Microsoft’s CodePlex site for open-source projects.

Version 1.0.0.0 of Clone Detective for Visual Studio was released on August 16 under an Apache 2.0 license.

“Duplicated source code can be an indicator for quality problems,” said project coordinator Immo Landwerth. “Having the same algorithm spread across the whole application in slightly different variations will lead to increased maintenance effort, which ultimately may result in inconsistencies.”

Among the reasons for code duplication is “lazy” developers who only know how to cut and paste, Landwerth said. Other reasons could include architectural constraints and methodology issues.

While currently limited to C# code, the next release will add capabilities to examine Visual Basic .Net and C++ code, Landwerth said. The integraton between Clone Detective and Visual Studio was developed by Landwerth and colleague Thomas Dallmair in cooperation with Technical University of Munich.

“Clone Detective makes it easy for developers to perform a clone detection and visualize the existing clones. However, in some cases, the source duplication cannot be easily removed (e.g. the cost of removing the clones outweighs the costs of keeping them due to heavy design change requirements),” Landwerth said. “In this case, Clone Detective helps by reminding you that a given portion of code is duplicated (by a purple bar in the code editor). So if you make changes to it you should review the other occurrences and make sure you keep your application consistent.”

Clone Detective leverages the university’s ConQUAT (continuous quality assessment toolkit) tool for clone detection.

The next version of Clone Detective will be able to find “fuzzy clones,” said Landwerth. “Fuzzy clones are clones that are almost identical but not token by token. This will allow you to find existing inconsistencies in your code base,” he said.

Separately in the Visual Studio realm, TeamExpand this week is offering timesheet-tracking software for Visual Studio.Net software development teams. Functioning with the Microsoft TFS (Team Foundation Server) application lifecycle management server, TeamExpand’s commercial release of its TX Chrono timesheet application allows project managers to submit and analyze timesheets.

The Web-based application features a set of notifications and reporting capabilities lacking in TFS, TeamExpand said. TX Chrono offers workflow and TFS compatibility to make software development activities more predictable and visible, the company said. Bug fixes are included as well.

TX Chrono offers:

*Automated notifications and alerts on projects, individuals and activities.

* Timesheet submission and approval.

* Individual and non-standard schedules.

* Non-standard working hours per day or week.

* Separate billable and non-billable tasks.

* Custom timetables.

* Advanced reporting.

TX Chrono is licensed at $15 per seat each month. A 30-day free trial version is available at this Web page.

Paul Krill

Paul Krill is editor at large at InfoWorld. Paul has been covering computer technology as a news and feature reporter for more than 35 years, including 30 years at InfoWorld. He has specialized in coverage of software development tools and technologies since the 1990s, and he continues to lead InfoWorld’s news coverage of software development platforms including Java and .NET and programming languages including JavaScript, TypeScript, PHP, Python, Ruby, Rust, and Go. Long trusted as a reporter who prioritizes accuracy, integrity, and the best interests of readers, Paul is sought out by technology companies and industry organizations who want to reach InfoWorld’s audience of software developers and other information technology professionals. Paul has won a “Best Technology News Coverage” award from IDG.

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