Mercurial > urweb

view src/triple_key_fn.sml @ 2243:da7d026d1a94

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix possible formula simplification bug with extra formula' type.
author Ziv Scully <ziv@mit.edu>
date Mon, 20 Jul 2015 19:49:13 -0700
parents 88cc0f44c940
children
line wrap: on
line source
functor TripleKeyFn (structure I : ORD_KEY
                     structure J : ORD_KEY
                     structure K : ORD_KEY)
        : ORD_KEY where type ord_key = I.ord_key * J.ord_key * K.ord_key = struct

type ord_key = I.ord_key * J.ord_key * K.ord_key

fun compare ((i1, j1, k1), (i2, j2, k2)) =
    case I.compare (i1, i2) of
        EQUAL => (case J.compare (j1, j2) of
                      EQUAL => K.compare (k1, k2)
                    | ord => ord)
      | ord => ord

end