Types

Primitive types

Type	Value
bool	true, false
int	32-bit signed integer
float	64-bit floating point; always finite
string	an immutable Unicode string
time	a minute of the day, 00:00–23:59
duration	a signed span of whole minutes
color	four channels (.r .g .b .a) on a 0–1 scale

• There is no none or null. Object references come in the next version.
• Colour channels are not clamped while computing; they are clamped where they reach the screen.

Conversions

The only implicit conversion is int → float. The others are written with as:

Written	Result
f as int	truncates toward zero (2.7 → 2, -2.7 → -2)
x as string	works from every primitive type
t as int, n as time	the minute of the day; outside 0–1439 is an error
d as int, n as duration	minutes

There is no conversion from a string to a number. A failing conversion is a runtime error.

What as string writes: int in decimal, float in its shortest round-trip form, bool as true/false, time as HH:MM, duration as 1h30m, color as #rrggbbaa.

Equality and comparison

• Equality is exact: float without tolerance, strings code point by code point, colours channel by channel.
• <, <=, >, >= are defined on numbers, time, duration and strings.
• Comparisons do not chain: a < b < c is an error.

Arithmetic

• + - * / work on numbers; % on int only.
• Mixing int and float gives a float.
• time ± duration → time, wrapping within the day: 23:30 + 1h == 00:30.
• duration ± duration and duration * int are defined.
• + joins strings; a string does not join another type: use {…} or as string.
• int overflow, division by zero, and a float operation that gives infinity or NaN are errors (Determinism).