Math, date, and datetime built-ins

Learning objective

• Use Lucia numeric and temporal helpers for practical tasks.

Key syntax

let r: float = sqrt(25);
let n: int = random(1, 10);
let d: date = today();
let dt: datetime = now();

Examples

• Numeric: sqrt, sin, cos, tan, log, pow, round, floor, ceil.
• Date/time constructors: date(...), datetime(...).
• Current values: today(), now().

Common mistakes

• Passing incompatible types to numeric functions.
• Assuming random range is exclusive (it is inclusive).

Suggested practice

• Build a script that prints a timestamp and evaluates trig expressions.

Related

• functions-and-builtins
• types-and-collections