Help! My Codebase has 5 JSON Libraries - How Generic Programming Rescued Me
summary
Codebase actually runs with RapidJSON, CPPRESTSDK, PicoJSON, nlohmann and Boost JSON and that fragmentation forces a practical solution: template the JWT logic to accept a JSON Traits layer and implement checks with is_detected and decltype/declval plus overload resolution hacks. The implementation uses static assertions and SFINAE to verify function signatures, handles member vs free functions, resolves overloads, and lands a JWT-CPP header-only PR that supports multiple libraries at the cost of added template complexity and brutal error messages.
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chapters (6)
- 0:00Start
- 4:03What Does the Solution Look like
- 5:47Verifying Json Web Tokens
- 9:25Function Signatures as Types
- 10:20Creating Tokens
- 18:01Review
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