Software Engineering Lecture 13 Design By Contract-Books Pdf

Software Engineering Lecture 13 Design by Contract
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Design by Contract
Table of Contents
Design by Contract
Contracts for Procedural Programs
Contracts for Object Oriented Programs
Contract Monitoring
Verification of Contracts
Peter Thiemann Univ Freiburg Software Engineering 17 06 2013 2 62
Design by Contract Contracts for Procedural Programs
Contracts for Procedural Programs
Peter Thiemann Univ Freiburg Software Engineering 17 06 2013 3 62
Design by Contract Contracts for Procedural Programs
Underlying Idea
Transfer the notion of contract between business partners to software
engineering
What is a contract
A binding agreement that explicitly states the obligations and the
benefits of each partner
Peter Thiemann Univ Freiburg Software Engineering 17 06 2013 4 62
Design by Contract Contracts for Procedural Programs
Example Contract between Builder and Landowner
Obligations Benefits
Landowner Provide 5 acres of Get building in less
land pay for building than six months
if completed in time
Builder Build house on pro No need to do any
vided land in less than thing if provided land
six month is smaller than 5 acres
Receive payment if
house finished in time
Peter Thiemann Univ Freiburg Software Engineering 17 06 2013 5 62

. Software Engineering Lecture 13 Design by Contract Peter Thiemann University of Freiburg Germany 17 06 2013 Design by Contract Table of Contents Design by Contract Contracts for Procedural Programs Contracts for Object Oriented Programs Contract Monitoring Veri cation of Contracts Peter Thiemann Univ Freiburg Software Engineering 17 06 2013 2 62 Design by Contract Contracts for

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