{
  "id": 20121192,
  "title": "Blog Series: From TypeScript to Rust & Go — Day 3: Mastering Functions and Error Handling",
  "url": "https://urgent.news/2026/11/15/blog-series-from-typescript-to-rust-go-day-3-mastering-functions-and",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-11-15T05:45:05.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/techamit95ch/blog-series-from-typescript-to-rust-go-day-3-mastering-functions-and-error-handling-2jc3"
  },
  "original_language": "en",
  "account": "Day 3 of our Rust and Go exploration focuses on functions and error handling, crucial skills for crafting reliable backend code. By mastering these concepts, developers can write maintainable and robust applications. Let's examine how these programming languages approach functions and error handling.\n\nIn both Rust and Go, functions serve as reusable blocks of code that encapsulate logic, preventing duplication. Function syntax varies between the languages: Rust uses `fn` followed by the function name, while Go uses `func` with the type specified after the parameter name. Both languages require explicit type annotations for parameters and return values.\n\nError handling is equally important. Rust employs the `Result` enum, which can be either `Ok` (representing success) or `Err` (indicating an error). Developers must handle errors explicitly using patterns like `match` or the `?` operator. Go, on the other hand, returns two values: a result and an error. Errors are typically handled immediately following a function call, enhancing code readability.\n\nTo reinforce these concepts, we built a simple calculator program in both Rust and Go. The calculator supports basic arithmetic operations like addition, subtraction, multiplication, and division, with error handling for invalid inputs. In Rust, the `Result` type is used to manage potential errors, while Go returns error values directly from functions.\n\nBy understanding these patterns in Rust and Go, developers can write cleaner, more maintainable code, bridging the gap from TypeScript to these powerful systems programming languages.",
  "summary": "Blog Series: From TypeScript to Rust & Go — Day 3: Mastering Functions and Error Handling Day 3: Writing Reusable Functions and Handling Errors in Rust and Go Introduction Welcome to Day 3 of our twice-weekly journey into Rust and Go! Today, we’ll explore functions and error handling , which are essential tools for writing clean, maintainable, and robust backend code. By the end of this post,…",
  "key_points": [
    "Functions in Rust and Go encapsulate reusable logic with type annotations.",
    "Rust uses Result enum for explicit error handling, Go returns error values directly.",
    "Calculator program demonstrates error handling in both languages."
  ],
  "editors_take": "Mastering these distinct approaches to error management and function syntax allows developers to transition from web-based scripting to the more rigorous requirements of robust systems programming.",
  "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."
}