Module "Char.curry"

Library with some useful functions on characters.

Author: Michael Hanus

Version: November 2001

Functions:
digitToInt | intToDigit | isAlpha | isAlphaNum | isDigit | isHexDigit | isLower | isOctDigit | isSpace | isUpper | toLower | toUpper

isUpper  :: Char -> Bool              Returns true if the argument is an uppercase letter.

isLower  :: Char -> Bool              Returns true if the argument is an lowercase letter.

isAlpha  :: Char -> Bool              Returns true if the argument is a letter.

isDigit  :: Char -> Bool              Returns true if the argument is a decimal digit.

isAlphaNum  :: Char -> Bool              Returns true if the argument is a letter or digit.

isOctDigit  :: Char -> Bool              Returns true if the argument is an octal digit.

isHexDigit  :: Char -> Bool              Returns true if the argument is a hexadecimal digit.

isSpace  :: Char -> Bool              Returns true if the argument is a white space.

toUpper  :: Char -> Char              Converts lowercase into uppercase letters.

toLower  :: Char -> Char              Converts uppercase into lowercase letters.

digitToInt  :: Char -> Int              Converts a (hexadecimal) digit character into an integer.

intToDigit  :: Int -> Char              Converts an integer into a (hexadecimal) digit character.

Returns true if the argument is an uppercase letter.

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isLower :: Char -> Bool   

Returns true if the argument is an lowercase letter.

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isAlpha :: Char -> Bool   

Returns true if the argument is a letter.

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isDigit :: Char -> Bool   

Returns true if the argument is a decimal digit.

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isAlphaNum :: Char -> Bool   

Returns true if the argument is a letter or digit.

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isOctDigit :: Char -> Bool   

Returns true if the argument is an octal digit.

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isHexDigit :: Char -> Bool   

Returns true if the argument is a hexadecimal digit.

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isSpace :: Char -> Bool   

Returns true if the argument is a white space.

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toUpper :: Char -> Char   

Converts lowercase into uppercase letters.

Further infos:

• incompletely defined

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toLower :: Char -> Char   

Converts uppercase into lowercase letters.

Further infos:

• incompletely defined

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digitToInt :: Char -> Int   

Converts a (hexadecimal) digit character into an integer.

Further infos:

• incompletely defined

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intToDigit :: Int -> Char   

Converts an integer into a (hexadecimal) digit character.

Further infos:

• incompletely defined

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