On 7/1/05, Fergal Daly <[EMAIL PROTECTED]> wrote: > On 7/1/05, Michael G Schwern <[EMAIL PROTECTED]> wrote: > > is_deeply() is not about exact equivalence. Its about making a best fit > > function for the most common uses. I think most people expect [$a, $a] and > > [$b,$c] to come out equal. > > > > Test::Deep is for tweaked deep comparisons. > > Test::Deep doesn't do what Yves wants. I've been aware of the problem > pretty much since I wrote it, I think the technical term for what Yves > wants is bisimulation. It's not trivial to add to is_deeply or TD but > TD already has a comparison cache with transactions which is part of > the solution so I think it would be possible to add it and make it > configurable,
Its actually very simple to add to is_deeply. You simply maintain two visited hashes and compare the visit counts when you enter a reference. If there is a mismatch the structures are different. Also, the addition to the interface that im proposing (ie looks_like()) would reuse the same code with a flag to determine which behaviour to use. yves -- perl -Mre=debug -e "/just|another|perl|hacker/"
