| Copyright | (c) 2020 Composewell Technologies and Contributors |
|---|---|
| License | Apache-2.0 |
| Maintainer | streamly@composewell.com |
| Stability | experimental |
| Safe Haskell | Safe-Inferred |
| Language | Haskell2010 |
Unicode.Char.Case.Compat
Contents
Description
Compatibility module for case and case mapping related functions.
The functions of this module are drop-in replacement for those in Data.Char. They are similar but not identical to some functions in Unicode.Char.Case, therefore they are placed in a separate module in order to avoid ambiguity.
Predicates
isUpper :: Char -> Bool Source #
Selects upper-case or title-case alphabetic Unicode characters (letters). Title case is used by a small number of letter ligatures like the single-character form of Lj.
It matches characters with general category
UppercaseLetter and
TitlecaseLetter.
See: isUpperCase for the full upper case predicate.
isUpper c == Data.Char.isUpper c
Since: 0.3.0
isLower :: Char -> Bool Source #
Selects lower-case alphabetic Unicode characters (letters).
It matches characters with general category LowercaseLetter.
See: isLowerCase for the full lower case predicate.
isLower c == Data.Char.isLower c
Since: 0.3.0
Case conversion
toUpper :: Char -> Char Source #
Convert a letter to the corresponding upper-case letter, if any. Any other character is returned unchanged.
It uses the character property Simple_Uppercase_Mapping.
See: upperCaseMapping and
toUpperString for full upper case conversion.
toUpper c == Data.Char.toUpper c
Since: 0.3.0
toLower :: Char -> Char Source #
Convert a letter to the corresponding lower-case letter, if any. Any other character is returned unchanged.
It uses the character property Simple_Lowercase_Mapping.
See: lowerCaseMapping and
toLowerString for full lower case conversion.
toLower c == Data.Char.toLower c
Since: 0.3.0
toTitle :: Char -> Char Source #
Convert a letter to the corresponding title-case or upper-case letter, if any. (Title case differs from upper case only for a small number of ligature letters.) Any other character is returned unchanged.
It uses the character property Simple_Titlecase_Mapping.
See: titleCaseMapping and
toTitleString for full title case conversion.
toTitle c == Data.Char.toTitle c
Since: 0.3.0