Rust India

A Universal Grammar for Payments: Compile-Time Guarantees with Rust's Type System Speaker: Arun Raj — Software Engineer, Juspay Every payment processor speaks a different dialect. Stripe wants nested JSON with idempotency keys. Razorpay expects base64-encoded auth. PayU has its own vocabulary entirely. Multiply this by 200+ payment methods, hundreds of countries, and varying regulatory requirements — and you get a combinatorial nightmare. At Juspay, the team used Rust's trait system, types, an

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