Operators

Arithmetic

Syntax	Semantics
x + y	Addition
x - y	Subtraction
x * y	Multiplication
x / y	Division (floating point)
div(x, y)	Integer division
rem(x, y)	Remainder division
:math.sqrt(x)	Square root
:math.pow(x)	Power

Comparison

Syntax	Semantics
x == y	Equality
x === y	Strict equality
x != y	Inequality
x !== y	Strict inequality
x < y	Less than
x <= y	Less than or equal to
x > y	Greater than
x >= y	Greater than or equal to

Booleans

Syntax	Semantics
a or b	Strict disjunction (only on true and false)
a and b	Strict conjunction (only on true and false)
not a	Strict negation (only on true and false)
a || b	Disjunction on generalized booleans
a && b	Conjunction on generalized booleans
!a	Negation on generalized booleans

Lists

Syntax	Semantics
[x|xs]	List construction
xs ++ ys	List concatenation
x in xs	List membership
x not in xs	List membership negation

Syntax	Semantics
s1 <> s2	String concatenation
s =~ regex	Regex match