Ur/Web: tests/redirect.ur annotate

Introduced the known() predicate

author	Adam Chlipala <adamc@hcoop.net>
date	Tue, 06 Apr 2010 09:51:36 -0400
parents	217eb87dde31
children

rev	line source
adamc@1065	1 fun other () = redirect (bless "http://www.google.com/")
adamc@1065	2
adamc@1065	3 fun further () = case checkUrl "http://www.google.com/" of
adamc@1065	4 None => return <xml>Darn.</xml>
adamc@1065	5 \| Some url => redirect url
adamc@1065	6
adamc@1065	7 fun failing () = case checkUrl "http://www.yahoo.com/" of
adamc@1065	8 None => return <xml>Darn.</xml>
adamc@1065	9 \| Some url => redirect url
adamc@1065	10
adamc@1065	11 fun main () = return <xml><body>
adamc@1065	12 <a link={other ()}>Go there</a><br/>
adamc@1065	13 <a link={further ()}>Go also there</a><br/>
adamc@1065	14 <a link={failing ()}>Fail there</a>
adamc@1065	15 </body></xml>

Mercurial > urweb