Haskell on Rails
or: How I Learned to Stop Worrying and Love the Compiler
James Dabbs
@
I
Haskell
II
Yesod
III
Ruby
Haskell
Yesod
&
Haskell
Yesod
&
Haskell
Ruby
&
Old Chestnuts
Immutable data
=
😻
nil
=
🙀
Composition
Prefer composition over inheritance
Gang of Four, Sandi Metz, et al.
–
Haskell
Ruby
Haskell
Ruby
Haskell
Ruby
Haskell
Ruby
Haskell
Ruby
Rack works because it's composable
It's composable because functional
}
}
Configuration
Execution
Mocking is required when our decomposition strategy has failed.
Eric Elliott
–
Layers &
Boundaries
Model:
View:
problem domain objects ⇄ database
domain objects → HTML / JSON
Model:
View:
Validation:
problem domain objects ⇄ database
domain objects → HTML / JSON
user input → domain objects
Hanami:
dry-rb:
ROM:
https://hanamirb.org
https://dry-rb.org
http://rom-rb.org
@solnica
Haskell on Rails
or: How I Learned to Stop Worrying and Love the Compiler
James Dabbs
@