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Wire once, rewire twice! (Haskell exchange-2018)

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Eric Torreborre
Eric Torreborre

This talk presents a library, registry, supporting the creation of modular Haskell applications in a very approachable way. And since this library actually helps with wiring functions it can be reused in other contexts like creating data generators for property-based testing.

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Wire Once, rewire twice! Eric Torreborre
Best Software Component?
A function!
Functions are sealed!
Good for Encapsulation Bad for Modification
My hobby
Radical
HttpServer Routes Services Clients
HttpServer Routes Services Clients
No reflection
Build and tweak
Build the right shape
HttpServer Routes Services Clients http://londonhttp://nyc
Arities Duplication Context
Functions, functions, functions
Replacing / mocking
Singletons Context Static checks Show Effects Mocking Resources Initialisation
Static checks
Effects
Singleton
All about context
HttpServer Routes Services Clients http://londonhttp://nyc
We can put components in libraries!
Resources
Data generation
Boilerplate components generators encoders
Functions all the way down!
Encapsulation
Specialization
Interpret = function calls

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Wire once, rewire twice! (Haskell exchange-2018)