Blog
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#112 -- WhatsApp OTP Authentication for Africa
How FLIN provides built-in WhatsApp OTP authentication -- the phone-first auth method designed for African markets where WhatsApp is the primary communication platform.
#006 -- Why We Chose Rust to Build a Programming Language
Why Juste A. GNIMAVO and Claude chose Rust to build the FLIN programming language compiler from Abidjan.
#036 -- Tagged Unions and Algebraic Data Types
How we brought algebraic data types to FLIN -- generic enums with associated data, Option<T>, Result<T, E>, and the Rust implementation of tagged unions.
#035 -- Pattern Matching: From Switch to Match
How we designed FLIN's pattern matching -- from simple value matching to exhaustive checking on tagged unions, and the Rust implementation that powers it all.
#021 -- Building a Stack-Based Virtual Machine in Rust
How we built FLIN's stack-based virtual machine in Rust: execution loop, value types, and call frames.
#003 -- Naming a Language After an Elephant: The Fongbe Origin of FLIN
FLIN's name comes from Fongbe (Benin): 'E flin nu' means 'It remembers things.' The elephant never forgets.
Generating PDFs, Spreadsheets, and Slide Decks From a Chat Message
Six file generation tools: XLSX, PDF, PPTX, DOCX, HTML, MD. The AI plans the structure, generates via Python libraries, uploads to S3, and streams progress.
#016 -- Code Generation: From AST to Bytecode
How FLIN's code generator transforms the AST into bytecode: opcodes, constant pool, and view instructions.
#015 -- Hindley-Milner Type Inference in a Custom Language
How FLIN uses Hindley-Milner type inference to determine types without annotations -- implemented in Rust.
#011 -- Session 1: Project Setup and 42 Keywords
Session 1 of building FLIN: project setup, 42 keywords, 60+ token types, and the first lines of a language compiler.
#002 -- 47 Technologies Replaced by One Language
FLIN replaces 47 technologies -- React, Next.js, Express, Prisma, Redux, and more -- with one unified language.
From 5 Agents to Production: Shipping 0diff in 20 Minutes
The full story: 5 parallel agents built 0diff in 45 minutes (2,356 lines, 44 tests), then a 20-minute polish session made it production-ready.