1. Leonardo Amarilho

3. Design Functional

4. Fail...

5. Difficult to find material

7. Design Principles from
Functional Perspective

8. SOLID Principles

9. Single-responsablity Principle
A class should have one, and
only one, reason to
The
change.
fundamental unit
of abstraction is the function

10. Open/closed Principle
You should be able to extend
The
a classes bahavior,
functions can
without modify
be substituted at will.
it
Don’t need to thinking about it

11. Liskov substituiton Principle
Derived clases must be
Most
substitutable for their
ambitions of the
Liskov substitution are
effectively trivial in FP
base classes

12. Interface Segregation Principle
Make fine grained interfaces
Functions
are segregated
by default definition
that are client
specific

13. Dependency Inversion Principle
Depend on abstractions,
The
not on concretions
side-effect free
nature of FP provide for
dependency inversion

14. Conclusion
The principles are absorved by functional
language in a natural way. The OO Patterns
still exists in the function paradigm,
but the implementation details differ.

15. Functional programming is
more a mindset than a
particular set of tools or
language.
“Functional Thinking”
Neal Ford - IBM Developer Work Series