int, float, bool, str, byte

Luma provides a small set of primitive value types that cover the most common needs in everyday programming. They are designed to be clear, predictable, and type-safe.

int

• A whole number (positive, negative, or zero).
• Backed by Go’s int type.
• Commonly used for counters, indexes, and arithmetic without fractions.

count: int = 42
temperature: int = -5

float

• A floating-point number with decimal precision.
• Backed by Go’s float64.
• Used when you need fractional values or calculations requiring division.

pi: float = 3.14159
price: float = 19.99

bool

• A logical true/false value.
• Supports operators &&, ||, and !.
• Often used in conditions and control flow.

isActive: bool = true
isDone: bool = false

if isActive && !isDone {
    print("Still working…")
}

str

• A sequence of Unicode characters.
• Defined using double quotes "...".
• Supports interpolation with ${…} to embed expressions.

name: str = "Luma"
greeting: str = "Hello, ${name}!"

Escape Sequences

Strings support the following escape sequences:

line: str = "first\nsecond"       // two lines
path: str = "C:\\Users\\file.txt" // backslash
csv: str = "a\r\nb"              // Windows-style line ending

byte

• A single 8-bit value (0–255).
• Useful for binary data, ASCII characters, and low-level tasks.
• an be written as numeric values or hexadecimal literals (0x..).

Quick Reference Table