V — Simple Fast Safe Compiled Language

Introduction

V is a general-purpose programming language that aims to combine the simplicity of Go, the performance of C, and the safety guarantees of Rust into a single coherent design. It compiles directly to C, making it easy to interoperate with existing C libraries and achieve near-native performance without a garbage collector pause.

What V Does

• Compiles entire projects in under one second with minimal memory usage
• Translates C and C++ code to idiomatic V automatically
• Provides memory safety without a garbage collector via ownership and reference semantics
• Ships a built-in package manager (VPM), formatter, and documentation generator
• Supports hot code reloading for rapid development iteration

Architecture Overview

V's compiler is a multi-pass pipeline written in V itself (self-hosted). Source files are lexed, parsed into an AST, then lowered to C code that is compiled by a system C compiler (GCC, Clang, or MSVC). An optional direct-to-machine-code backend is under development. The standard library covers networking, JSON, concurrency (coroutines on top of OS threads), and a cross-platform UI module.

Self-Hosting & Configuration

• Clone the repo and run make; no external dependencies beyond a C compiler
• Use v symlink to install the v binary system-wide
• Manage dependencies via v.mod and v install author.package
• Configure build flags with v.cfg or command-line switches (-prod, -cc gcc)
• Cross-compile to Windows, Linux, macOS, FreeBSD, and WASM targets

Key Features

• Autofree memory management eliminates GC pauses while preventing leaks
• First-class concurrency with lightweight coroutines and channel-based communication
• Built-in ORM for SQLite, PostgreSQL, and MySQL without external dependencies
• @[live] attribute enables hot code reloading during development
• C interop requires zero boilerplate; call any C function directly

Comparison with Similar Tools

• Go — V offers similar simplicity but compiles faster, produces smaller binaries, and avoids a runtime GC
• Rust — Rust provides stronger safety guarantees at the cost of a steeper learning curve and slower compile times
• Zig — Zig targets low-level systems programming; V aims higher with built-in ORM, web framework, and UI toolkit
• Nim — Nim also compiles via C but uses a GC by default; V's autofree approach is distinct
• C — V can be seen as a modernized C with bounds checking, modules, and safer defaults

FAQ

Q: Is V ready for production use? A: V is usable for many projects and has a growing ecosystem, but some advanced features are still maturing. Evaluate it for your use case.

Q: How does V handle memory management without a GC? A: V uses an autofree system that inserts deallocation calls at compile time based on scope analysis, similar to defer-based cleanup.

Q: Can V call existing C libraries? A: Yes. V can call C functions directly with minimal wrapper code, and the c2v tool can translate entire C codebases to V.

Q: What editor support is available? A: Official plugins exist for VS Code, Vim, Emacs, and Sublime Text with syntax highlighting, auto-completion, and diagnostics.

Sources

• https://github.com/vlang/v
• https://vlang.io
• https://github.com/vlang/v/blob/master/doc/docs.md