##-
# Author: Brian Tiffin
# Dedicated to the public domain
#
# Date: August, 2016
# Modified: 2016-10-03/22:38-0400
##+
#
# backtrack-bound.icn
#
procedure main()
    # not found; a keeps the value 1, alternate not used
    a := (1 | 2)
    if find("h", "this") == a then
        write("found at ", a)
    else
        write("not found: a is ", a)

    # found; alternative is allowed when striving for the goal
    if find("h", "this") == (a := (1 | 2)) then
        write("found at ", a)
    else
        write("not found: a is ", a)
end