Cosmo/docs/operators.md

Operators

Arithmetic

Operator	Description	Example
+	Adds two numerical values together	print(2 + 2) -> 3 ;)
-	Subtracts two numerical values together	print(2 - 1) -> 1
*	Multiplies two numerical values together	print(3 * 3) -> 9
/	Divides two numerical values together	print(5 / 2) -> 2.5
%	performs a modulus operator on two numerical values	print(5 % 2) -> 1

-> means 'outputs'

Unary

Operator	Description	Example
!	"Not" logical operator, flips the logical polarity.	print(!true) -> false
#	"Count" calls '__count' metamethod on objects or gives the count of entries in tables	print(#[1,2,3]) -> 3, print(#{__count = function(self) return self.x end, x = 1337}) -> 1337
++	Increment operator.	let i = 0 print(++i .. ", " .. i++ .. ", " .. i) -> 1, 1, 2
--	Decrement operator.	let i = 0 print(--i .. ", " .. i-- .. ", " .. i) -> -1, -1, -2
( ... )	Call operator. Arguments should be separated using ,.	print("Hello", " ", "world!") -> Hello world!

-> means 'outputs'

Logical

Operator	Description	Example
and	Logical 'and' operation	print(true and 1337) -> 1337
or	Logical 'or' operation	print(nil or false or 1337) -> 1337
==	Logical equality operation	print(1337 == 1337) -> true
!=	Logical not equality operation	print(1337 != 1337) -> false
>=	Greater than or equals too	print(1337 >= 2000) -> false
<=	Less than or equals too	print(1337 <= 2000) -> true
>	Greater than	print(1337 > 2000) -> false
<	Less than	print(1337 < 2000) -> true

-> means 'outputs'