let integer = (x : MatcheePair) =>
{ let wrapped_x = toSome(x);
let plusMinus = orDo(match1Char('+'), match1Char('-')); // ([+]|[-])
let integer = (x : MatcheePair) =>
{ let wrapped_x = toSome(x);
let plusMinus = orDo(match1Char('+'), match1Char('-')); // ([+]|[-])