vlang/v

v-veb

Writing V web applications with veb - the App and Context structs, route attributes with path parameters, ctx.html and ctx.json, templates with $tmpl and $veb.html, middleware with Middleware.use and route_use, shared state with shared and lock, and static…

v-project

Create V projects with v new or v init and choose a binary, library or web template.

v-package

Manage V packages: install, update, search, remove and link local modules.

v-memory

V's memory model - GC modes (-gc boehm, -gc none, -prealloc), the optional -ownership checking that catches use-after-move, what unsafe unlocks, and the C interop rules. Use when choosing a GC mode, when a program leaks or grows without bound, when deciding…

v-concurrency

V's concurrency primitives - spawn, the sync module (channels, Mutex, RwMutex, WaitGroup, Once, Pool, select), and parallel.amap for parallel map and run. Use when writing code with goroutines, threads, channels, locks, shared mutable state, a WaitGroup, or a…

v-lang

The V language rules that make code which looks right fail to compile or behave wrongly - ?T versus !T, sum types and match exhaustiveness, mut receivers, module names matching directories, comptime $ forms, and explicit type conversion. Use when writing or…

v-mcp

Using the V MCP server, `v mcp serve`, to read and change V code through the compiler itself - the AST, declarations, references, diagnostics, stdlib docs, an AST-aware rename, a guarded edit and the formatter. Use when an agent needs to know what a V file…

v-scripts

Writing V as a scripting language - `.vsh` script mode, its implicit `import os` and unqualified `os` calls, running a script directly, the executable-cache contract that governs rebuilds, compiling a script without running it, and shebang scripts with no…

v-testing

Writing and running V tests - _test.v layout, test_ function naming, the assert builtin, fixtures and cleanup with os.vtmp_dir and defer, and the VTEST_ONLY and VTEST_ONLY_FN filters for a subset. Use when adding or changing a V test, when a test does not…

v-tools

The parts of the V command surface that are easy to miss - inspecting code (`v ast`, `v where`, `v mod why`), shrinking a compiler error (`v reduce`), project hygiene (`v missdoc`, `v check-md`, `v bump`, `v git-fmt-hook`), embedding binaries (`v bin2v`),…

v-workflow

How to build, type-check, format, vet, test and ship V code, and how the v.mod module system resolves imports. Use before declaring a V change finished, when a build or test command is needed, when a dependency will not resolve, when working in the V…