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<div align="center" style="display:grid;place-items:center;">
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<p>
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<a href="https://vlang.io/" target="_blank"><img width="80" src="https://raw.githubusercontent.com/vlang/v-logo/master/dist/v-logo.svg?sanitize=true" alt="V logo"></a>
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</p>
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<h1>The V Programming Language</h1>
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[vlang.io](https://vlang.io)
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| [Docs](https://github.com/vlang/v/blob/master/doc/docs.md)
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| [Changelog](https://github.com/vlang/v/blob/master/CHANGELOG.md)
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| [Speed](https://fast.vlang.io/)
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| [Contributing & compiler design](https://github.com/vlang/v/blob/master/CONTRIBUTING.md)
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</div>
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<div align="center" style="display:grid;place-items:center;">
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<!--
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[![Build Status][WorkflowBadge]][WorkflowUrl]
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-->
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[![Sponsor][SponsorBadge]][SponsorUrl]
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[![Patreon][PatreonBadge]][PatreonUrl]
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||||
[![Discord][DiscordBadge]][DiscordUrl]
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[![X][XBadge]][XUrl]
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[![Modules][ModulesBadge]][ModulesUrl]
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</div>
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## Key Features of V
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- Simplicity: the language can be learned over the course of a weekend
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- Fast compilation: ≈110k loc/s with a Clang backend,
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≈500k loc/s with native and tcc backends *(Intel i5-7500, SSD, no
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optimization)* ([demo video](https://www.youtube.com/watch?v=pvP6wmcl_Sc))
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- Easy to develop: V compiles itself in less than a second
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- Performance: as fast as C (V's main backend compiles to human-readable C)
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- Safety: no null, no globals, no undefined behavior (wip), immutability by default
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- C to V translation ([Translating DOOM demo video](https://www.youtube.com/watch?v=6oXrz3oRoEg))
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- Hot code reloading
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- [Flexible memory management](https://vlang.io/#memory). GC by default, manual via `v -gc none`,
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arena allocation via `v -prealloc`, autofree via `v -autofree`
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([autofree demo video](https://www.youtube.com/watch?v=gmB8ea8uLsM)).
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- [Cross-platform UI library](https://github.com/vlang/ui)
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- Built-in graphics library
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- Easy cross-compilation
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- REPL
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- [Built-in ORM](https://github.com/vlang/v/blob/master/doc/docs.md#orm)
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- [Built-in web framework](https://github.com/vlang/v/blob/master/vlib/veb/README.md)
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- C and JavaScript backends
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- Great for writing low-level software ([Vinix OS](https://github.com/vlang/vinix))
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## Stability, future changes, post 1.0 freeze
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Despite being at an early development stage, the V language is relatively stable, and doesn't
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change often. But there will be changes before 1.0.
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Most changes in the syntax are handled via vfmt automatically.
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The V core APIs (primarily the `os` module) will also have minor changes until
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they are stabilized in V 1.0. Of course, the APIs will grow after that, but without breaking
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existing code.
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After the 1.0 release V is going to be in the "feature freeze" mode. That means no breaking changes
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in the language, only bug fixes and performance improvements. Similar to Go.
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Will there be V 2.0? Not within a decade after 1.0, perhaps not ever.
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To sum it up, unlike many other languages, V is not going to be always changing, with new features
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introduced and old features modified. It is always going to be a small and simple
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language, very similar to the way it is right now.
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## Installing V from source
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**This is the preferred method.**
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### Linux, macOS, Windows, \*BSD, Solaris, WSL, etc.
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Usually, installing V is quite simple if you have an environment that already has a
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functional `git` installation.
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Note: On Windows, run `makev.bat` instead of `make` in CMD, or `./makev.bat` in
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PowerShell.
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Note: On Ubuntu/Debian, you may need to run `sudo apt install git build-essential make` first.
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To get started, execute the following in your terminal/shell:
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```bash
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git clone --depth=1 https://github.com/vlang/v
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cd v
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make
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```
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That should be it, and you should find your V executable at `[path to V repo]/v`.
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`[path to V repo]` can be anywhere.
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(Like the note above says, on Windows, use `makev.bat`, instead of `make`.)
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Now try running `./v run examples/hello_world.v` (or `v run examples/hello_world.v` in cmd shell).
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- *Trouble? Please see the notes above, and link to
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[Installation Issues](https://github.com/vlang/v/discussions/categories/installation-issues)
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for help.*
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Note: V is being constantly updated. To update V to its latest version, simply run:
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```bash
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v up
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```
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> [!NOTE]
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> If you run into any trouble, or you have a different operating
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> system or Linux distribution that doesn't install or work immediately, please see
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> [Installation Issues](https://github.com/vlang/v/discussions/categories/installation-issues)
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> and search for your OS and problem.
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>
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> If you can't find your problem, please add it to an existing discussion if one exists for
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> your OS, or create a new one if a main discussion doesn't yet exist for your OS.
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### Void Linux
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```bash
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# xbps-install -Su base-devel
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# xbps-install libatomic-devel
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$ git clone --depth=1 https://github.com/vlang/v
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$ cd v
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$ make
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```
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### Docker
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```bash
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git clone --depth=1 https://github.com/vlang/v
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cd v
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docker build -t vlang .
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docker run --rm -it vlang:latest
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```
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### Docker with Alpine/musl
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```bash
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git clone --depth=1 https://github.com/vlang/v
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cd v
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docker build -t vlang_alpine - < Dockerfile.alpine
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alias with_alpine='docker run -u 1000:1000 --rm -it -v .:/src -w /src vlang_alpine:latest'
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```
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Compiling *static* executables, ready to be copied to a server, that is running
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another linux distro, without dependencies:
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```bash
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with_alpine v -skip-unused -prod -cc gcc -cflags -static -compress examples/http_server.v
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with_alpine v -skip-unused -prod -cc gcc -cflags -static -compress -gc none examples/hello_world.v
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ls -la examples/http_server examples/hello_world
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file examples/http_server examples/hello_world
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examples/http_server: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, no section header
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examples/hello_world: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, no section header
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```
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You should see something like this:
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```
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-rwxr-xr-x 1 root root 16612 May 27 17:07 examples/hello_world
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-rwxr-xr-x 1 root root 335308 May 27 17:07 examples/http_server
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```
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### FreeBSD
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On FreeBSD, V needs `boehm-gc-threaded` package preinstalled. After installing it, you can use the
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same script, like on Linux/macos:
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```bash
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pkg install boehm-gc-threaded
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git clone --depth=1 https://github.com/vlang/v
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cd v
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make
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```
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### OpenBSD
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On OpenBSD (release 7.8), V needs `boehm-gc` and `openssl-3.5` packages preinstalled. After
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installing them, use GNU `make` (installed with `gmake` package), to build V.
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```bash
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pkg_add boehm-gc openssl%3.5 gmake
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git clone --depth=1 https://github.com/vlang/v
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cd v
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gmake
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```
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### Termux/Android
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On Termux, V needs some packages preinstalled - a working C compiler, also `libexecinfo`,
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`libgc` and `libgc-static`. After installing them, you can use the same script, like on
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Linux/macos:
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```bash
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pkg install clang libexecinfo libgc libgc-static tcc make git
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pkg update
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git clone --depth=1 https://github.com/vlang/v
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cd v
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make
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./v symlink
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```
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Note: there is *no* need for `sudo ./v symlink` on Termux (and sudo is not installed by default).
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For faster development builds, keep the Termux `tcc` package installed; V will use it by default
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when no compatible bundled `thirdparty/tcc` binary is available on the host.
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### C compiler
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The [Tiny C Compiler (tcc)](https://repo.or.cz/w/tinycc.git) is downloaded for you by `make` if
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there is a compatible version for your system, and installed under the V `thirdparty` directory.
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This compiler is very fast, but does almost no optimizations. It is best for development builds.
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For production builds (using the `-prod` option to V), it's recommended to use clang, gcc, or
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Microsoft Visual C++. If you are doing development, you most likely already have one of those
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installed.
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Otherwise, follow these instructions:
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- [Installing a C compiler on Linux and macOS](https://github.com/vlang/v/wiki/Installing-a-C-compiler-on-Linux-and-macOS)
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- [Installing a C compiler on Windows](https://github.com/vlang/v/wiki/Installing-a-C-compiler-on-Windows)
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### Symlinking
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> [!NOTE]
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> It is *highly recommended*, that you put V on your PATH. That saves
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> you the effort to type in the full path to your v executable every time.
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> V provides a convenience `v symlink` command to do that more easily.
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On Unix systems, it creates a `v` symlink in `/usr/local/bin` by
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default. To do that, run:
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```bash
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sudo ./v symlink
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```
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You can also pass a different directory, for example:
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```bash
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./v symlink ~/.local/bin
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```
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On Windows, start a new shell with administrative privileges, for example by pressing the
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<kbd>Windows Key</kbd>, then type `cmd.exe`, right-click on its menu entry, and choose `Run as
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administrator`. In the new administrative shell, cd to the path where you have compiled V, then
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type:
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```bat
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v symlink
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```
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(or `.\v symlink` in PowerShell)
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You can pass a different directory there too, for example
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`v symlink C:\Users\you\bin`.
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That will make V available everywhere, by adding it to your PATH. Please restart your
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shell/editor after that, so that it can pick up the new PATH variable.
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> [!NOTE]
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> There is no need to run `v symlink` more than once - v will still be available, even after
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> `v up`, restarts, and so on. You only need to run it again if you decide to move the V repo
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> folder somewhere else.
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## Editor/IDE Plugins
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- [Atom](https://github.com/vlang/awesome-v#atom)
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- [CodeLite](doc/codelite.md)
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- [Emacs](https://github.com/vlang/awesome-v#emacs)
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- [JetBrains](https://plugins.jetbrains.com/plugin/20287-vlang/docs/syntax-highlighting.html)
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- [Sublime Text 3](https://github.com/vlang/awesome-v#sublime-text-3)
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- [Vim](https://github.com/vlang/awesome-v#vim)
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- [Vim/Neovim Runtime Files](editors/vim)
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- [VS Code](https://marketplace.visualstudio.com/items?itemName=VOSCA.vscode-v-analyzer)
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- [zed](https://github.com/lv37/zed-v)
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To bring IDE functions for the V programming languages to your editor, check out
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[v-analyzer](https://github.com/vlang/v-analyzer). It provides language server capabilities.
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## Testing and running the examples
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Make sure V can compile itself:
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```bash
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$ v self
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$ v
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V 0.3.x
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Use Ctrl-C or `exit` to exit
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>>> println('hello world')
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hello world
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>>>
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```
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`v self` defaults to `-gc none`. Pass `-gc <mode>` if you need a different GC mode.
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```bash
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cd examples
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v hello_world.v && ./hello_world # or simply
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v run hello_world.v # this builds the program and runs it right away
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v run word_counter/word_counter.v word_counter/cinderella.txt
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v run news_fetcher.v
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v run tetris/tetris.v
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```
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When a project has a `.vvmrc` file, `v <project>` and `v run <project>` try
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to use the requested V binary (for example `v0.4.6`) before falling back to
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the current compiler.
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<img src='https://raw.githubusercontent.com/vlang/v/master/examples/tetris/screenshot.png' width=300 alt='tetris screenshot'>
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## Sokol and GG GUI apps/games:
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In order to build Tetris or 2048 (or anything else using the `sokol` or `gg` graphics modules),
|
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you will need to install additional development libraries for your system.
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| System | Installation method |
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|---------------------|----------------------------------------------------------------------------------------------------|
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| Debian/Ubuntu based | Run `sudo apt install libxi-dev libxcursor-dev libgl-dev libxrandr-dev libasound2-dev` |
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| Fedora/RH/CentOS | Run `sudo dnf install libXi-devel libXcursor-devel libX11-devel libXrandr-devel libglvnd-devel` |
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||||
| | |
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||||
| NixOS | Add `xorg.libX11.dev xorg.libXcursor.dev xorg.libXi.dev xorg.libXrandr.dev libGL.dev` to |
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||||
| | to `environment.systemPackages` |
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||||
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## V net.http, net.websocket, `v install`
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The net.http module, the net.websocket module, and the `v install` command may all use SSL.
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V comes with a version of mbedtls, which should work on all systems. If you find a need to
|
||||
use OpenSSL instead, you will need to make sure that it is installed on your system, then
|
||||
use the `-d use_openssl` switch when you compile.
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||||
|
||||
Note: Mbed-TLS is smaller and easier to install on windows too (V comes with it), but if you
|
||||
write programs, that do lots of http requests to HTTPS/SSL servers, in most cases, it is *best*
|
||||
to compile with `-d use_openssl`, and do so on a system, where you do have OpenSSL installed
|
||||
(see below). Mbed-TLS is slower, and can have more issues, especially when you are doing parallel
|
||||
http requests to multiple hosts (for example in web scrapers, REST API clients, RSS readers, etc).
|
||||
On windows, it is better to run such programs in WSL2.
|
||||
|
||||
To install OpenSSL on non-Windows systems:
|
||||
|
||||
| System | Installation command |
|
||||
|---------------------|----------------------------------|
|
||||
| macOS | `brew install openssl` |
|
||||
| Debian/Ubuntu based | `sudo apt install libssl-dev` |
|
||||
| Arch/Manjaro | openssl is installed by default |
|
||||
| Fedora/CentOS/RH | `sudo dnf install openssl-devel` |
|
||||
|
||||
On Windows, OpenSSL is simply hard to get working correctly. The instructions
|
||||
[here](https://tecadmin.net/install-openssl-on-windows/) may (or may not) help.
|
||||
|
||||
## V sync
|
||||
|
||||
V's `sync` module and channel implementation uses libatomic.
|
||||
It is most likely already installed on your system, but if not,
|
||||
you can install it, by doing the following:
|
||||
|
||||
| System | Installation command |
|
||||
|---------------------|-------------------------------------|
|
||||
| macOS | already installed |
|
||||
| Debian/Ubuntu based | `sudo apt install libatomic1` |
|
||||
| Fedora/CentOS/RH | `sudo dnf install libatomic-static` |
|
||||
|
||||
## V UI
|
||||
|
||||
<a href="https://github.com/vlang/ui">
|
||||
<img src='https://raw.githubusercontent.com/vlang/ui/master/examples/screenshot.png' width=712 alt='V UI example screenshot'>
|
||||
</a>
|
||||
|
||||
https://github.com/vlang/ui
|
||||
|
||||
<!---
|
||||
## JavaScript backend
|
||||
|
||||
[examples/js_hello_world.v](examples/js_hello_world.v):
|
||||
|
||||
```v
|
||||
fn main() {
|
||||
for i in 0 .. 3 {
|
||||
println('Hello from V.js')
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
```bash
|
||||
v -o hi.js examples/js_hello_world.v && node hi.js
|
||||
Hello from V.js
|
||||
Hello from V.js
|
||||
Hello from V.js
|
||||
```
|
||||
-->
|
||||
|
||||
## Android graphical apps
|
||||
|
||||
With V's `vab` tool, building V UI and graphical apps for Android can become as easy as:
|
||||
|
||||
```
|
||||
./vab /path/to/v/examples/2048
|
||||
```
|
||||
|
||||
[https://github.com/vlang/vab](https://github.com/vlang/vab).
|
||||
<img src="https://user-images.githubusercontent.com/768942/107622846-c13f3900-6c58-11eb-8a66-55db12979b73.png" alt="vab examples screenshot">
|
||||
|
||||
## Developing web applications
|
||||
|
||||
Check out the
|
||||
[Building a simple web blog](https://github.com/vlang/v/blob/master/tutorials/building_a_simple_web_blog_with_veb/README.md)
|
||||
tutorial and Gitly, a light and fast alternative to GitHub/GitLab:
|
||||
|
||||
https://github.com/vlang/gitly
|
||||
|
||||
<img src="https://user-images.githubusercontent.com/687996/85933714-b195fe80-b8da-11ea-9ddd-09cadc2103e4.png" alt="gitly screenshot">
|
||||
|
||||
## Vinix, an OS/kernel written in V
|
||||
|
||||
V is great for writing low-level software like drivers and kernels.
|
||||
Vinix is an OS/kernel that already runs bash, GCC, V, and nano.
|
||||
|
||||
https://github.com/vlang/vinix
|
||||
|
||||
<img src="https://github.com/vlang/vinix/blob/main/screenshot0.png?raw=true" alt="vinix screenshot 1">
|
||||
<img src="https://github.com/vlang/vinix/blob/main/screenshot1.png?raw=true" alt="vinix screenshot 2">
|
||||
|
||||
## Acknowledgement
|
||||
|
||||
### TCC
|
||||
|
||||
V thanks Fabrice Bellard for his original work on the
|
||||
[TCC - Tiny C Compiler](https://bellard.org/tcc/).
|
||||
Note the TCC website is old; the current TCC repository can be found
|
||||
[here](https://repo.or.cz/w/tinycc.git).
|
||||
V utilizes pre-built TCC binaries located at
|
||||
[https://github.com/vlang/tccbin/](https://github.com/vlang/tccbin/).
|
||||
On Linux, `make` retries the portable `thirdparty-linuxmusl-*` TCC bundle when
|
||||
the host-specific bundle does not run on the current system.
|
||||
To rebuild the bundled `thirdparty/tcc` in place from upstream TinyCC on the
|
||||
platforms that have an in-tree build script, run `make latest_tcc_source`.
|
||||
Pass `TCC_COMMIT=<hash-or-branch>` to pin a specific upstream revision.
|
||||
|
||||
### PVS-Studio
|
||||
|
||||
[PVS-Studio](https://pvs-studio.com/pvs-studio/?utm_source=website&utm_medium=github&utm_campaign=open_source) - static analyzer for C, C++, C#, and Java code.
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
Please see the
|
||||
[Troubleshooting](https://github.com/vlang/v/wiki/Troubleshooting)
|
||||
section on our
|
||||
[wiki page](https://github.com/vlang/v/wiki).
|
||||
|
||||
[WorkflowBadge]: https://github.com/vlang/v/workflows/CI/badge.svg
|
||||
[DiscordBadge]: https://img.shields.io/discord/592103645835821068?label=Discord&logo=discord&logoColor=white
|
||||
[PatreonBadge]: https://img.shields.io/endpoint.svg?url=https%3A%2F%2Fshieldsio-patreon.vercel.app%2Fapi%3Fusername%3Dvlang%26type%3Dpatrons&style=flat
|
||||
[SponsorBadge]: https://img.shields.io/github/sponsors/medvednikov?style=flat&logo=github&logoColor=white
|
||||
[XBadge]: https://img.shields.io/badge/follow-%40v__language-1DA1F2?logo=x&style=flat&logoColor=white
|
||||
[ModulesBadge]: https://img.shields.io/badge/modules-reference-027d9c?logo=v&logoColor=white&logoWidth=10
|
||||
|
||||
[WorkflowUrl]: https://github.com/vlang/v/commits/master
|
||||
[DiscordUrl]: https://discord.gg/vlang
|
||||
[PatreonUrl]: https://patreon.com/vlang
|
||||
[SponsorUrl]: https://github.com/sponsors/medvednikov
|
||||
[XUrl]: https://x.com/v_language
|
||||
[ModulesUrl]: https://modules.vlang.io
|
||||
Reference in new issue
Block a user