(ab)

Parse repeated applications of a parser p, separated by
applications of a parser op whose result value is an
operator that is assumed to associate to the left, and
which is used to combine the results from the p parsers.

Parse repeated applications of a parser p, separated by
applications of a parser op whose result value is an
operator that is assumed to associate to the right, and
which is used to combine the results from the p parsers.
 

(a|b)

Deterministic choice (+++) operator. Has the same behaviour
as `or-else`, except that at most one result is returned.

(a*)

Parse repeated applications of a parser; the many combinator
permits zero or more applications of the parser.

(a?)

Parse zero or one applications of a parser.

(a|b)

Non-deterministic choice (++) operator. Applies both parsers
to the argument string, and appends their list of results.

(a+) is equivalent to (aa*)

Parse repeated applications of a parser; the plus combinator
permits one or more applications of the parser.

Parse repeated applications of a parser p, separated by
applications of a parser sep whose result values are
thrown away.

This parser will process at least one application of p.
For a list of zero or more, use:

  (optional (separated-by p sep))

Parse a single space, tab, newline or carriage-return.

Parse a string of (zero or more) spaces, tabs, and newlines.

Parse a specific string.

Parse a symbolic token.

Parse a token using a parser p, throwing away any trailing space.