Haskell Types

Types exists to classify identities (according to their characteristics).
In Haskell every expression have a associated type

e :: T

means that the type of expression e is T.

58	:: Int
'a'	:: Char
[1, 2, 3]	:: [Int]
('a', 3)	:: (Char, Int)

• Basic Types

Bool	Boolean	True, False
Char	Characters	'a', 'B', '1', '\n', ...
Int	Integers with limited size	1, -8, 234345, ...
Integer	Integers with unlimited size	1, -8, 54634785464345345, ...
Float	Numbers with float coma	3.5, 4.0, -6.4356, 51.2e7, 3e4, ...
Double	Numbers with float with double precision	3.5, -6.342342345543, 51.2e7, ...