Basic Operators

🚧 kaoscript will allow to override operators.

arithmetic

// Numbers
1 + 2			// 3
1 + 2 + 3		// 6
1 - 2			// -1
-2				// -2
2 * 3			// 6
18 / 3			// 6
18 / 5			// 3.6
18 /. 5			// 3
18 % 3			// 0
18 % 5			// 3
18 % 10 % 5		// 3

let x = 0
++x				// 1
x++				// 2
--x				// 1
x--				// 0

// Strings
'foo' + 'bar'	// foobar

comparison

1 == 1			// true
1 == 1 == 2		// false
1 != 2			// true
3 > 2 > 1		// true
3 < 5 < 1		// false
3 <= 3 <= 5		// true
4 >= 1			// true

Chaining comparisons

Comparisons can be chained.

1 < 2 <= 2 < 3 == 3 > 2 >= 1 == 1 < 3 != 5
// true

if 1 < x() < 42 {
	// `x()` is evaluated only once, its result is saved in a temporary variable
}

logical

!true			// false
true || false	// true
true && false	// false
true ^^ false	// true
true -> false	// false

bitwise & shift

0x22 & 0x0f		// 0x02
0x22 & ~0x0f	// 0x20
0x22 | 0x0f		// 0x2f
0x22 ^ 0x0f		// 0x2d
0x22 << 4		// 0x220
0x22 >> 4		// 0x02

conditional

if ?value {
	// `value` is not null
}

if value? {
	// `value` is not null
}

t = x ?? y ?? z			// `t` is equal to the first not-null variable from `x`, `y` or `z` (in that order)

x = y == 42 ? 0 : 1		// `x` is equal to 0 is `y` equals `42`, if not `1`

The operator ?? is a polyadic operator.

typing

class Foobar {

}

if x is Foobar {
	// `x`'s type is `Foobar`
}

if x is not Foobar {
	// `x`'s type isn't `Foobar`
}

t = (x as String).toUpperCase()

t = x:String.toUpperCase()

t = x as Array<String>

assignment