Class DS_COMPARATOR |

    note

>     description:

>         "Comparators"

>     library:    "Gobo Eiffel Structure Library"
>     author:     "Eric Bezault <ericb@gobosoft.com>"
>     copyright:  "Copyright (c) 2000-2001, Eric Bezault and others"
>     license:    "MIT License"

    deferred class interface

>     DS_COMPARATOR [G]

    feature -- Status report

>     less_than (u, v: G): BOOLEAN
>             -- Is u considered less than v?
>         require
>             u_not_void: u /= Void
>             v_not_void: v /= Void
>         deferred
>         ensure
>             asymmetric: Result implies not less_than (v, u)

    end -- class DS_COMPARATOR