SlideShare a Scribd company logo
Enums On Steroids
Marcin Chrost
Who am I ?
Marcin Chrost
https://chrost.eu
Problem – loan engine
Step 0 – objects hierarchy
Step 1 – no casting
Step 2 - records
Step 3 – pattern matching
Step 4 – arrow labels
Step 5 – guarded patterns
Step 6 – sealed classes
Step 7 – record patterns
Wanna try this @home ?
https://github.com/chrosciu/loan-engine
Wanna learn more ?
https://chrost.eu
Questions ?
Thank you for your attention !

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