nim

name	nim
description	Nim systems programming with Python-like syntax. Use for .nim files.

Nim

Nim v2.0 (2023/2024) made ORC (Deterministic Memory Management) the default. It compiles to C/C++/JS and offers Python-like syntax with C-like speeds.

When to Use

• Game Development: Hot reloading and performance.
• Embedded: Compiles to small C code requiring no runtime.
• Scripting: Compiles so fast it feels like a script (nim r).

Core Concepts

Metaprogramming

First-class support. You can rewrite the AST to create DSLs.

ORC

Cycle-collecting ARC. Automatic memory management without pauses.

Backends

Can compile to C, C++, Objective-C, or JavaScript.

Best Practices (2025)

Do:

• Use ARC/ORC: The default in v2.0. Clean up is deterministic (destructors).
• Use f-strings: fmt"Hello {name}".
• Use karax: For frontend (compiling Nim to JS).

Don't:

• Don't mix styles: Choose PascalCase or camelCase (Nim is style-insensitive but consistency matters).

References

• Nim Lang