first seeds planted

_notes/solid for fp.md

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+title: SOLID for FP
+---
+
+<status>Status: 🌱 </status>
+
+I have OOP brackground and used SOLID and other OOP techniques to make my code better.
+
+Since then I switched to FP and feel like there's not enough `guidelines` for writing FP code. At the same time I have a hunch that some of the OOP wisdom can be applied here.
+
+- **S**ingle Responsibility Principle - this one is easy and free to take. Just make sure that your methods have "one reason to change" - a single responsobility. Make them small and specialized. Anything with `and` in name can be a sign that there's too much going on
+- **O**pen Close Principle - this one is trickier, but if we say that refactoring is flow of making code open to extension - this makes things easier to adapt. Basically you want to be able to add new functionalities withtout altering existing code - and this can be achieved in FP.
+- **L**iskov Substitution Principle - 
+- **I**nterface Segregation Principle -
+- **D**ependency Inversion Principle - can be argued to go with "top level module" as main dependency, instead of more specialized ones.