Scala - simple design by contract

Scala - simple design by contract

References

Reference NO 1

http://stackoverflow.com/questions/15205495/scala-simple-design-by-contract

Reference NO 2

http://blog.m1key.me/2010/02/programming-scala-design-by-contract.html

Reference NO 3

http://www.scala-lang.org/node/6958

Reference NO 4

http://www.havelund.com/Publications/howard60.pdf

Reference NO 5

http://bertrandmeyer.com/category/design-by-contract/

Reference NO 6

http://www.pm.inf.ethz.ch/education/theses/student_docs/Rokas_Matulis/Rokas_Matulis_MA_report

Reference NO 7

http://ofps.oreilly.com/titles/9780596155957/ApplicationDesign.html

Reference NO 8

http://whiley.org/2011/06/17/design-by-contract-is-most-requested-feature/