Operators

VDX supports arithmetic, comparison, and equality operators.

Arithmetic

Operator	Description	Example
`+`	Addition	`3 + 2` → `5`
`-`	Subtraction	`10 - 4` → `6`
`*`	Multiplication	`3 * 4` → `12`
`/`	Division (integer)	`7 / 2` → `3`
`%`	Modulo (remainder)	`7 % 3` → `1`
`-x`	Unary minus	`-5` → `-5`

Comparison

Operator	Description	Example
`<`	Less than	`3 < 5` → `true`
`>`	Greater than	`5 > 3` → `true`
`<=`	Less or equal	`3 <= 3` → `true`
`>=`	Greater or equal	`5 >= 3` → `true`

Equality

Operator	Description	Example
`==`	Equal	`5 == 5` → `true`
`!=`	Not equal	`5 != 3` → `true`

String concatenation

The + operator also concatenates strings:

let greeting = "Hello" + " " + "world";
print(greeting);    // Hello world

Comparison operators work on strings too (v0.1.5+) — lexicographic order: "apple" < "banana" → true

Logical (v0.1.5+)

Operator	Description	Example
`!`	Logical not (truthiness)	`!done`
`&&`	Logical and — short-circuits	`x > 0 && y > 0`
`\|\|`	Logical or — short-circuits	`a \|\| b`

&& and || short-circuit: the right side is not evaluated when the result is already decided. Operands use normal truthiness rules (0, 0.0, "", [] are falsy).

Precedence

From highest to lowest:

! -x ++ -- — unary
* / % — multiplication, division, modulo
+ - — addition, subtraction
< > <= >= — comparison
== != — equality
&& — logical and (v0.1.5+)
|| — logical or (v0.1.5+)

Use parentheses () to override precedence.

Division by zero

Dividing by zero throws a runtime error:

[VDX] Division by zero