{
  "id": 9335403,
  "title": "Let's make a programming language. Functions—Key points",
  "url": "https://urgent.news/2026/09/23/lets-make-a-programming-language-functions-key-points",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-09-23T12:35:34.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/pvsdev/lets-make-a-programming-language-functions-key-points-19p6"
  },
  "original_language": "en",
  "account": null,
  "summary": "In the latest episode of the \"Let's make a programming language\" series, Yuri Minaev, a C++ developer and architect at PVS-Studio, demonstrates how to implement functions in the toy language using C++. Functions introduce multiple scopes and different levels of name visibility, with names declared inside a function being inaccessible outside it while names from parent scopes remain accessible. Parsing functions involves declaring them with the 'fn' keyword, specifying parameters, and defining a compound statement containing the function body. Functions are parsed in two stages: declaration and body processing. The semantic analyzer determines a function's return type from return statements, checks compatibility, and adds implicit casts when necessary. An empty function with no return statements gets the void type. The talk concludes with functions implemented and introduces the evaluator as the next step.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}