Principles Desing in functional perspective
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Transcript of Principles Desing in functional perspective
Leonardo Amarilho
Design Functional
Fail...
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Design Principles from Functional Perspective
SOLID Principles
Single-responsablity Principle
A class should have one, and
only one, reason to
change. The
fundamental unit
of abstraction is the function
Open/closed Principle
You should be able to extend
a classes bahavior,
without modify
it
The
functions can
be substituted at will.
Don’t need to thinking about it
Liskov substituiton Principle
Derived clases must be
substitutable for their
base classes
Most
ambitions of the
Liskov substitution are
effectively trivial in FP
Interface Segregation Principle
Make fine grained interfaces
that are client
specific Functions
are segregated
by default definition
Dependency Inversion Principle
Depend on abstractions,
not on concretions The
side-effect free
nature of FP provide for
dependency inversion
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.
Functional programming is more a mindset than a particular set of tools or language.
“Functional Thinking” Neal Ford - IBM Developer Work Series