nens/lizard-client — pull request #146 by ernstkui (2014-11-03 10:25:54+00:00)
Title: Ernst oop etc layers

Situation
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Layers were having a lot of if else ladders.

Problem
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We did not have a layer class that could operate as a *interface* between different layer types.

Action
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- [ ] Create abstract layer class
- [ ] Create specific layer type classes that implement these classes