Mercurial > urweb

view tests/caseFfi.ur @ 1892:907a82a44f01

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add missing inter-library dependencies This is needed, at least on recent Ubuntu, to fix these linker errors when compiling any Ur/Web application: liburweb.so: undefined reference to `lround' liburweb.so: undefined reference to `ceil' liburweb.so: undefined reference to `RAND_bytes' liburweb.so: undefined reference to `DES_fcrypt' liburweb.so: undefined reference to `SHA256_Init' liburweb.so: undefined reference to `SHA256_Final' liburweb.so: undefined reference to `SHA256_Update' Signed-off-by: Anders Kaseorg <andersk@mit.edu> --- src/c/Makefile.am | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
author Anders Kaseorg <andersk@mit.edu>
date Thu, 21 Nov 2013 14:32:11 -0500
parents 71bafe66dbe1
children
line wrap: on
line source
extern structure M : sig
        datatype t = A | B
        datatype u = C of t | D
end

val f = fn x => case x of M.A => M.B | M.B => M.A

val t2s = fn x => case x of M.A => "A" | M.B => "B"

val g = fn x => case x of M.C a => M.C (f a) | M.D => M.C M.A

val u2s = fn x => case x of M.C a => t2s a | M.D => "D"

val page = fn x => <html><body>
        {cdata (t2s x)}
</body></html>

val page2 = fn x => <html><body>
        {cdata (u2s x)}
</body></html>

val main : unit -> page = fn () => <html><body>
        <li><a link={page M.A}>A</a></li>
        <li><a link={page M.B}>B</a></li>
        <li><a link={page2 (M.C M.A)}>C A</a></li>
        <li><a link={page2 (M.C M.B)}>C B</a></li>
        <li><a link={page2 M.D}>D</a></li>
</body></html>