Boolean

The true and false logical truth values are represented by the Boolean type:

var t: Boolean = true
var f: Boolean = false

Boolean values are operated upon by the &&, ||, and ! logical operators:

Operator name	Operator	Description	Operator type
Conjunction	`&&`	Evaluates to true when two of its operands are `true`, otherwise evaluates to `false`.	Binary
Disjunction	`\|\|`	Evaluates to true when at least one operand is `true`, otherwise evaluates to `false`.	Binary
Negation	`!`	Inverts the value of its Boolean operand.	Unary