ideal • library • characters • character handler radix →
interface character handler
extends deeply immutable data
boolean is letter(character the character) pure
boolean is letter or digit(character the character) pure
boolean is whitespace(character the character) pure
boolean is upper case(character the character) pure
boolean is digit(character the character) pure
nonnegative or null from digit(character the character, nonnegative radix) pure
character to lower case(character the character)
character from code(nonnegative code)
ideal • library • characters • character handler radix →