{
  "$type": "site.standard.document",
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  "path": "/t/transformations-functors-categories/13994#post_1",
  "publishedAt": "2026-04-29T13:52:33.000Z",
  "site": "https://discourse.haskell.org",
  "tags": [
    "https://muratkasimov.art/Ya/Articles/Transformations,-functors,-categories/"
  ],
  "textContent": "https://muratkasimov.art/Ya/Articles/Transformations,-functors,-categories/\n\nThis order in the title is not accidental - functors start making sence in context of natural transformations and categories are rarely interesting without reasoning in terms of mappings between them i.e. functors.\n\nIn this article I briefly introduce these concepts and demonstrate how to use other categories in Я besides Arrow (regular functions) - Scope category and Event precategory; along how they are related to each other.",
  "title": "Transformations, functors, categories"
}