Software Engineering
Johannes Hahn
  • Member for 5 years, 4 months
  • Last seen more than a week ago
  • Aachen, Germany
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About

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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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
How to avoid breaking LSP when specialising (MVC) classes?
Jul 29 '20
1
RESTful API User Accounts
Sep 21 '20
0
Why is a Spring's HttpClientErrorException an unchecked exception?
Mar 15 '21
Top network posts
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43
Fantastic properties of Z/2Z
35
Problems where we can't make a canonical choice, solved by looking at all choices at once
24
Odd digits of $2^n$
23
Is cohomology always related to topology?
20
For nonabelian finite simple $G$, does $Aut(G)$ have a unique subgroup isomorphic to $G$?

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