Getting Started With V Programming Pdf Updated Info

git clone https://github.com/vlang/learn
cd learn/docs
pandoc getting_started.md -o v_getting_started.pdf --latex-engine=xelatex

(Install pandoc and a LaTeX engine first.)

Once you have V installed, it's time to write your first program. Here’s a classic "Hello, World!" example:

fn main() 
    println('Hello, World!')

Let’s go through this:

To run this program, save it in a file named hello.v, then execute it using the V compiler:

v run hello.v

You should see "Hello, World!" printed in your terminal. getting started with v programming pdf updated

Before diving into the "how," let’s understand the "why." V was created by Alexander Medvednikov with a clear manifesto:

A: The official Discord server (discord.gg/vlang) is extremely active. Also, the GitHub Discussions board.

V does not use classes. Instead, it uses structs for data encapsulation.

V only has one loop keyword: for.

1. The C-style for:

for i := 0; i < 5; i++ 
    println(i)

2. The for in loop (arrays/maps):

nums := [1, 2, 3]
for num in nums 
    println(num)

3. The while equivalent:

mut count := 0
for count < 5 
    println(count)
    count++

4. Infinite loop:

for 
    // Do something forever
    // Use 'break' to exit

As you become more comfortable with the basics, you'll want to explore more advanced topics. Here are some steps you can take:

Functions are defined using the fn keyword. V enforces that function arguments are immutable by default.

fn add(a int, b int) int 
    return a + b
fn main() 
    result := add(5, 7)
    println(result) // Output: 12

To modify arguments inside a function, they must be marked with mut.

fn increment(mut n int) 
    n++
fn main() 
    mut count := 5
    increment(mut count)
    println(count) // Output: 6

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