Data.CaseInsensitive

A CI s provides Case Insensitive comparison for the string-like type s (for example: String, Text, ByteString, etc.).

Note that CI s has an instance for IsString which together with the OverloadedStrings language extension allows you to write case insensitive string literals as in:

> ("Content-Type" :: CI Text) == ("CONTENT-TYPE" :: CI Text)
True

Make the given string-like value case insensitive.

Retrieve the original string-like value.

Retrieve the case folded string-like value. (Also see foldCase).

Transform the original string-like value but keep it case insensitive.

Transform the original string-like value but keep it case insensitive.

Class of string-like types that support folding cases.

Note: In some languages, case conversion is a locale- and context-dependent operation. The foldCase method is not intended to be locale sensitive. Programs that require locale sensitivity should use appropriate versions of the case mapping functions from the text-icu package: http://hackage.haskell.org/package/text-icu