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Module: Char
Function: isHexDigit
Type: Char -> Bool
Description: True if the character is a hexadecimal numeric character (0..9,A..F,a..f)
Related:

Example 1

Input: isHexDigit '8'

Output: True

Example 2

Input: isHexDigit 'E'

Output: True

Example 3

Input: isHexDigit 'X'

Output: False