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Module: Prelude
Function: fromEnum
Type: Enum a => a -> Int
Class: Enum
Description: returns the argument position in an enumeration
Related: enumFrom, enumFromThen, enumFromThenTo, enumFromTo, pred, succ, toEnum

Example 1

Input: fromEnum '#'

Output: 35

Example 2
Program source: 
data XXX = AA|BB|CC|DD deriving (Enum, Show)

Input: fromEnum BB

Output: 1