Consuming GraphQL in TypeSafe Languages

on YouTube ↗31m

" summary

Apollo iOS implements a Swift code generator that produces selection-set-based models (one model per fragment/query) and a shared storage box called dataDict to avoid copying, using copy-on-write for value semantics. Polymorphism uses optional type-case accessors (e.g., asVinylRecord) and a field merging step that hoists fields into matched type-cases and fragments so view code gets the exact fields it needs. Generation runs over the whole schema, improves memory and access speed, and offers toggles to disable or limit merging.

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" chapters (10)

1. 0:00Introduction to GraphQL
2. 1:05Challenges of type safety
3. 3:11Generating type-safe models
4. 5:59Models based on selection sets
5. 7:46Handling polymorphism
6. 9:55Field merging concept
7. 14:28Fragment conversion
8. 17:55Core design principles
9. 18:56Memory and performance
10. 22:45Summary and Q&A

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