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Johannes Hahn's user avatar
Johannes Hahn's user avatar
Johannes Hahn's user avatar
Johannes Hahn
  • Member for 9 years, 2 months
  • Last seen more than a month ago
  • Aachen, Germany
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4
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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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Top posts

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question
3
Design Pattern for interdependent abstract methods
Oct 14, 2016
answer
3
Is 'List' a leaky abstraction?
Dec 20, 2016
question
2
Migrating legacy code with singletons to Dependency injection
Sep 16, 2020
question
2
Pattern for syncing databases with undo option
Nov 24, 2020
answer
2
Can hashtable be used for implementing multimap?
Oct 19, 2016
answer
1
Java Generics, difference between two methods signatures with wildcard vs type parameter
Oct 18, 2016
answer
1
How to avoid breaking LSP when specialising (MVC) classes?
Jul 29, 2020
answer
1
RESTful API User Accounts
Sep 21, 2020
answer
0
How to define and share a JSON schema between the front-end and back-end of an application?
Jan 12, 2017
answer
0
Algorithm to limit the speed of processing items
Mar 22, 2017

Top network posts

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46
Fantastic properties of Z/2Z
41
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?
21
What functions are support functions of convex sets