Skip to main content

Chapter 2 - Variables and Literals

Variables​

Use var to declare variables:

var x = 42;
var name = "hello";
var pi = 3.14;
var isActive = true;

Literals​

Integers​

std::print(3);
std::print(42);
std::print(200_000_000);  // Underscores for readability

Floats​

std::print(3.14);
std::print(25.3);

Strings​

std::print("Hello, XVR!");

Booleans​

std::print(true);
std::print(false);

XVR uses {} placeholders:

var name = "World";
var age = 25;
var pi = 3.14159;

std::print("Hello, {}!", name);              // Hello, World!
std::print("Age: {}", age);                  // Age: 25
std::print("Pi: {:.2f}", pi);                // Pi: 3.14
std::print("{} is {} years old", name, age); // World is 25 years old

Type Inference​

The format string automatically detects types:

ValueTypeFormat
"hello"string%s
42integer%d
3.14float%lf
trueboolean%s

Escaping Braces​

Use {{ and }} for literal braces:

std::print("{{hello}}");  // {hello}

Multiple Values​

var a = 10;
var b = 20;
std::print("{} + {} = {}", a, b, a + b);  // 10 + 20 = 30