Data.CaseInsensitive.Eq

This, like most other case-insensitive matching algorithms, is an over-simplification. For some complex Q&A about properties like case, see http://unicode.org/faq/casemap_charprop.html. A round-trip case-conversion does not necessarily result in the original character(s) in some scripts. Also, string matching is not necessarily the same as character matching. The char-at-a-time approach taken here is not technically correct, but works for the most scripts, and definitely for ASCII and the ISO-8859-1 8-bit Latin 1 character set.

Usage is simple:

main = putStrLn $ if "HREF" ^== "href" then "match" else "no match"

Documentation

class CaseInsensitiveEq a where

Minimal complete definition

caseInsensitiveEq

Methods

caseInsensitiveEq :: a -> a -> Bool

caseInsensitiveMatch :: [a] -> [a] -> Bool

Instances

CaseInsensitiveEq Char

Methods

caseInsensitiveEq :: Char -> Char -> Bool

caseInsensitiveMatch :: [Char] -> [Char] -> Bool

CaseInsensitiveEq Word8

Methods

caseInsensitiveEq :: Word8 -> Word8 -> Bool

caseInsensitiveMatch :: [Word8] -> [Word8] -> Bool

CaseInsensitiveEq ByteString

Methods

caseInsensitiveEq :: ByteString -> ByteString -> Bool

caseInsensitiveMatch :: [ByteString] -> [ByteString] -> Bool

CaseInsensitiveEq ByteString

Methods

caseInsensitiveEq :: ByteString -> ByteString -> Bool

caseInsensitiveMatch :: [ByteString] -> [ByteString] -> Bool

CaseInsensitiveEq Text

Methods

caseInsensitiveEq :: Text -> Text -> Bool

caseInsensitiveMatch :: [Text] -> [Text] -> Bool

CaseInsensitiveEq Text

Methods

caseInsensitiveEq :: Text -> Text -> Bool

caseInsensitiveMatch :: [Text] -> [Text] -> Bool

CaseInsensitiveEq a => CaseInsensitiveEq [a]

Methods

caseInsensitiveEq :: [a] -> [a] -> Bool

caseInsensitiveMatch :: [[a]] -> [[a]] -> Bool

(CaseInsensitiveEq a, CaseInsensitiveEq b) => CaseInsensitiveEq (a, b)

Methods

caseInsensitiveEq :: (a, b) -> (a, b) -> Bool

caseInsensitiveMatch :: [(a, b)] -> [(a, b)] -> Bool

(CaseInsensitiveEq a, CaseInsensitiveEq b, CaseInsensitiveEq c) => CaseInsensitiveEq (a, b, c)

Methods

caseInsensitiveEq :: (a, b, c) -> (a, b, c) -> Bool

caseInsensitiveMatch :: [(a, b, c)] -> [(a, b, c)] -> Bool

(CaseInsensitiveEq a, CaseInsensitiveEq b, CaseInsensitiveEq c, CaseInsensitiveEq d) => CaseInsensitiveEq (a, b, c, d)

Methods

caseInsensitiveEq :: (a, b, c, d) -> (a, b, c, d) -> Bool

caseInsensitiveMatch :: [(a, b, c, d)] -> [(a, b, c, d)] -> Bool

(^==) :: CaseInsensitiveEq a => a -> a -> Bool

An equality operator for CaseInsensitiveEq.

(^/=) :: CaseInsensitiveEq a => a -> a -> Bool

An inequality operator for CaseInsensitiveEq.