Built-ins

Always available, no namespace. Generic built-ins (len, str, num, push, pop) are dispatched by static type at compile time — using one on the wrong type is a compile error, not a runtime surprise.

Generic

Signature	Notes
len(x: str \| list \| map): num	characters / elements / entries
str(x: num \| bool \| str): str	str(42) → "42", integers print clean
num(s: str): num?	parse; nil on failure (including "")
push(xs: list<T>, v: T)	append
pop(xs: list<T>): T?	remove+return last; nil when empty

Math

Signature	Notes
floor(x: num): num · ceil(x: num): num
abs(x: num): num · sqrt(x: num): num
min(a: num, b: num): num · max(a, b)
sin(x: num): num · cos(x: num): num	radians
atan(y: num, x: num): num	two-argument arctangent
pi	constant

Randomness — deterministic by design

Signature	Notes
rand(): num	uniform [0, 1), xorshift64* — the same sequence on every machine
srand(seed: num)	reseed; seed your game once for replayable runs

There is no "time-seeded" mode: if you want variation between runs, seed with something you choose (and can log). CI screenshot tests rely on this.

Environment & testing

Signature	Notes
env(name: str): str?	read an environment variable (e.g. your game's own MYGAME_AUTO self-play switch)
check(cond: bool, msg: str)	runtime assertion; failure shows check failed: msg on the error screen — the wick test suite is built from these

Bits and register widths (0.3)

bit_and, bit_or, bit_xor, bit_not, bit_shl, bit_shr, u8, u16, hex, bin: see Bits, bytes, and words for exact domains, wrapping and formatting rules.