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Johannes Hahn

Studied math, PhD, was a software developer / tech consultant for a while, returned to university as a PostDoc, now software developer again. Still a mathematician at heart.

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  • Aachen, Germany
  • Member for 4 years, 5 months
  • 50 profile views
  • Last seen 2 days ago

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3 Design Pattern for interdependent abstract methods Oct 14 '16
3 Is 'List' a leaky abstraction? Dec 20 '16
2 Can hashtable be used for implementing multimap? Oct 19 '16
2 Migrating legacy code with singletons to Dependency injection Sep 16 '20
2 Pattern for syncing databases with undo option Nov 24 '20
1 Java Generics, difference between two methods signatures with wildcard vs type parameter Oct 18 '16
1 SOLID, Does Liskov Substitution Principle (LSP) conflict with the Interface Segregation Principle (ISP)? Jul 24 '20
1 RESTful API User Accounts Sep 21 '20
0 How to avoid breaking LSP when specialising (MVC) classes? Jul 29 '20
0 The point of sealing a class Sep 4 '20
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