Key Features of V
- Simplicity: the language can be learned over the course of a weekend
- Fast compilation: ≈110k loc/s with a Clang backend,
≈500k loc/s with native and tcc backends
(Intel i5-7500, SSD, no
(demo video )
- Easy to develop: V compiles itself in less than a second
- Performance: as fast as C (V's main backend compiles to human-readable C)
- Safety: no null, no globals, no undefined behavior (wip), immutability by default
- C to V translation (
Translating DOOM demo video
- Hot code reloading
Flexible memory management
. GC by default, manual via
v -gc none
, arena allocation via
, autofree via
(autofree demo video ).
- Cross-platform UI library
- Built-in graphics library
- Easy cross-compilation
- Built-in ORM
- Built-in web framework
- Great for writing low-level software (
Stability, future changes, post 1.0 freeze
Despite being at an early development stage, the V language is relatively stable, and doesn't change often. But there will be changes before 1.0. Most changes in the syntax are handled via vfmt automatically.
The V core APIs (primarily the
After the 1.0 release V is going to be in the "feature freeze" mode. That means no breaking changes in the language, only bug fixes and performance improvements. Similar to Go.
Will there be V 2.0? Not within a decade after 1.0, perhaps not ever.
To sum it up, unlike many other languages, V is not going to be always changing, with new features being introduced and old features modified. It is always going to be a small and simple language, very similar to the way it is right now.
Installing V from source
--> (this is the preferred method)
Linux, macOS, Windows, *BSD, Solaris, WSL, etc.
Usually, installing V is quite simple if you have an environment that already has a
To get started, simply try to execute the following in your terminal/shell:
git clone https://github.com/vlang/v cd v make # HINT: Using Windows? run make.bat in a cmd shell, or ./make.bat in PowerShell
That should be it and you should find your V executable at
[path to V repo]/v
[path to V repo]
(As in the hint above, on Windows
Now you can try
./v run examples/hello_world.v
v run examples/hello_world.v
Trouble? Please see the note above and link to
V is constantly being updated. To update V, simply run:
If you run into any trouble, or you have a different operating system or Linux distribution that doesn't install or work immediately, please seeInstallation Issues and search for your OS and problem.
If you can't find your problem, please add it to an existing discussion if one exists for your OS, or create a new one if a main discussion doesn't yet exist for your OS.
Tiny C Compiler (tcc)
This compiler is very fast, but does almost no optimizations. It is best for development builds.
For production builds (using the
Otherwise, follow these instructions:
It ishighly recommended , that you put V on your PATH. That saves you the effort to type in the full path to your v executable every time. V provides a convenience
command to do that more easily.
On Unix systems, it creates a
sudo ./v symlink
On Windows, start a new shell with administrative privileges, for example by pressing the
Run as administrator
That will make V available everywhere, by adding it to your PATH. Please restart your shell/editor after that, so that it can pick up the new PATH variable.
There is no need to run
more than once - v will still be available, even after
, restarts, and so on. You only need to run it again if you decide to move the V repo folder somewhere else.
Expand Void Linux instructions
# xbps-install -Su base-devel # xbps-install libatomic-devel $ git clone https://github.com/vlang/v $ cd v $ make
Expand Docker instructions
git clone https://github.com/vlang/v cd v docker build -t vlang . docker run --rm -it vlang:latest
Docker with Alpine/musl
git clone https://github.com/vlang/v cd v docker build -t vlang --file=Dockerfile.alpine . docker run --rm -it vlang:latest
On Termux, V needs some packages preinstalled - a working C compiler, also
pkg install clang libexecinfo libgc libgc-static make git git clone https://github.com/vlang/v cd v make
The plugin for JetBrains IDEs (IntelliJ, CLion, GoLand, etc.) also offers a great development
experience with V. You can find all features in
Testing and running the examples
Make sure V can compile itself:
$ v self $ v V 0.3.x Use Ctrl-C or `exit` to exit >>> println('hello world') hello world >>>
cd examples v hello_world.v && ./hello_world # or simply v run hello_world.v # this builds the program and runs it right away v run word_counter/word_counter.v word_counter/cinderella.txt v run news_fetcher.v v run tetris/tetris.v
In order to build Tetris or 2048 (or anything else using
V net.http, net.websocket,
The net.http module, the net.websocket module, and the
To install OpenSSL on non-Windows systems:
|Arch/Manjaro||openssl is installed by default|
On Windows, OpenSSL is simply hard to get working correctly. The instructions
Android graphical apps
Developing web applications
Check out the
Building a simple web blog
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.
V thanks Fabrice Bellard for his original work on the
TCC - Tiny C Compiler