/**
* Returns a parser that produces an alpha-numeric character.
*
* @param missing The error if there is no character on the stream to produce an alpha-numeric
* character with.
* @param sat The error if the produced character is not an alpha-numeric character.
* @return A parser that produces an alpha-numeric character.
* @see Character#isLetterOrDigit(char)
*/
public static <E> Parser<Stream<Character>, Character, E> alphaNum(
final F0<E> missing, final F<Character, E> sat) {
return StreamParser.satisfy(missing, sat, c -> Character.isLetterOrDigit(c));
}
