Article
Examples inside the rule: a new kind of subject unit test
How does an executable flang example differ from a regular unit test, and how to use it together with node:test and service startup.
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Topic: flang
31 articles on this topic.
Articles
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Article
Rules, order, and properties: how a decision is computed
How flang computes the result, it applies several rules and checks postconditions without side effects.
Article
Structures and types: the shape of subject data
Built-in types, optional fields, states, nested objects, and form or table generation from the canonical model.
Article
Two surfaces: the same rule in Russian and English
Two equal indentation surfaces flang, quotation marks, angle brackets, names with spaces and a unified semantics.
Article
Toolchain: CLI, library, MCP, and canonical JSON
How to install flang, check the model, get JSON, and choose between library API, CLI, and MCP.
Article
Mental model: data, rules, inference, and effect
Four layers of the language and honest distinction between computation, proof and application external action.
Article
Executable specifications: a rule the compiler checks
A business rule usually lives in three places — the ticket, the code and the tests — and drifts apart. This course is about writing it once in flang, so the compiler …
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