Basics (type and operators)

Types

In LobsterLang we have 5 types :

• Int
• Boolean
• String
• List
• Function

Operators

Operations are stricly permetted to certains combination of types and only right-associative

-> denote the return type of the operator

Operators and the associated types are:

Unary operators

• @ : any type -> String (to string)
• ! : Boolean -> Boolean (boolean not)
• ~ : List -> Int (length)

Binary operators

• + : two Int -> Int (addition) or two String -> String (concatenation)
• - : two Int -> Int (substraction)
• * : two Int -> Int (multiplication)
• / : two Int -> Int (division)
• % : two Int -> Int (modulo)
• == : two Int -> Boolean (equal)
• != : two Int -> Boolean (not equal)
• > : two Int -> Boolean (greater than)
• >= : two Int -> Boolean (greater than or equal)
• < : two Int -> Boolean (lesser than)
• <= : two Int -> Boolean (lesser than or equal)
• && : two Boolean -> Boolean (boolean and)
• || : two Boolean -> Boolean (boolean or)
• ^^ : two Boolean -> Boolean (boolean xor)
• ++ : List and any type -> List (append)
• -- : List and any type -> List (remove all occurences)
• !! : List and Int -> any type (Get an element) or String and Int -> String (Get a substring of one character)
• $ : two any type (then operator)