Page History

null

constant

null + 1

1

Null value, see above

false

constant

1 == 0

false

Integer value 0, useful in Boolean expressions

true

constant

null == 0

true

Integer value 1, useful in Boolean expressions

pi

constant

2 * pi

6.2831853rad

π as an angle (same as 180deg)

()

delimiter

(2 + 4) * (6 + 1)

42

Parentheses for arithmetic grouping

[]

delimiter

[1, 2, 2+1, 'string']

[1, 2, 3, 'string']

List of values

{}

delimiter

{101, 3}

'Some text'

Text lookup (page ID and text ID) from TextDB
(Note: Braces are also used for property lookups)

+

unary

+21 * (+2)

42

Denotes positive number (no effect)

-

unary

-(21 * -2)

42

Negates the following number

not

unary

not (21 == 42)

true

Yields true if the following expression is false (equal to zero), false otherwise

typeof

unary

typeof null

typeof 0

typeof 'Hello world'

datatype.null

datatype.integer

datatype.string

Yields the data type of the following sub-expression

sin

unary

sin(30deg)

sin(pi)

0.5

1.0

Sine (function-style, parentheses required)

cos

unary

cos(60deg)

cos(pi)

0.5

0.0

Cosine (function-style, parentheses required)

sqrt

unary

sqrt(2)

1.414213LF

Square root (function-style, parentheses required)

exp

unary

exp(1)

2.71828LF

Exponential function (function-style, parentheses required)

log

unary

log(8) / log(2)

3.0LF

Natural logarithm (function-style, parentheses required)

^

binary

10 ^ 3

1000.0LF

Power

*

binary

21 * 2

42

Multiplication

/

binary

42 / 10
42.0 / 10.0

4
4.2

Division

%

binary

42 % 10

2

Modulus (remainder of integer division)

+

binary

1 + 1

'Hello' + ' world'

2

'Hello world'

Addition

String concatenation

-

binary

1 - 1

0

Subtraction

lt

&lt; (<)

binary

1 lt 3

1 < 3

true

Less than

le

&lt;=

binary

1 le 3

1 <= 3

true

Less than or equal to

gt

&gt; (>)

binary

1 gt 3

1 > 3

false

Greater than

ge

&gt;=

binary

1 ge 3

1 >= 3

false

Greater than or equal to

==

binary

1 + 1 == 2.0

true

Equal to

!=

binary

1 + 1 != 2.0

false

Not equal to

and

binary

true and false

false

Logical AND (short-circuit semantics)

or

binary

true or false

true

Logical OR (short-circuit semantics)

if ... then ...

if ... then ... else ...

if 1 == 2 then 'F'

if 1 == 2 then 'F' else 'T'

null

'T'

Conditional operator ("inline if")