Imported from majiayu000/claude-skill-registry-data (development/v/SKILL.md). Install upstream with npx skills add majiayu000/claude-skill-registry-data --skill v. Copyright stays with the author.

V (Vlang)

V (2024 updates) focuses on compilation speed (1 million LOC/s) and safety (Autofree). It aims to be a modern C replacement with Go-like simplicity.

When to Use

• Fast Compilation: Iteration speed of an interpreted language.
• Graphics: v ui module provides a cross-platform UI toolkit.
• No Dependencies: V is a single binary executable.

Core Concepts

Autofree

Compiler inserts free() calls automatically (experimental/improving).

C Interop

C.printf(). Direct calling of C functions.

Option/Result

fn foo() ?int. Error handling with or { ... }.

Best Practices (2025)

Do:

• Use v fmt: Built-in formatter.
• Use v install: Built-in package manager.
• Cross-compile: V makes outputting C for other platforms easy.

Don't:

• Don't use globals: V discourages mutable global state.

References

• V Lang