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Parse.or.3kaya

NAME

Parse::or - Create a new parser which is the combination of the arguments.

SYNOPSIS

Parser<a> or( Parser<a> x, Parser<a> y )

ARGUMENTS

x The first parser

y The second parser

DESCRIPTION

Create a new parser combining x and y
 The new parser recognises a string which is recognised by either x or y.

 decimal = or(Parse::digit,Parse::char@('.'));
 // may be more clear in many situations to write this as
 decimal = Parse::digit `or` Parse::char@('.');

As with Kaya's || operator, this uses short-circuit evaluation: if x parses the String successfully, y will not be used.

AUTHORS

Kaya standard library by Edwin Brady, Chris Morris and others (kaya@kayalang.org). For further information see http://kayalang.org/

LICENSE

The Kaya standard library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License (version 2.1 or any later version) as published by the Free Software Foundation.