List Equality

[Nicholas Blatter]

I'm trying to figure out the best way to test typei functions that
return a list of constraints.

Is there a built-in Racket function which tests for list equality by
comparing value-membership instead of value-index? For example a
function that says the lists '(1 2 3) and '(2 1 3) are equal but '(1 2
3) and '(2 1 2) are not.

It wouldn't be that hard to write one (test length and then each
value), but if it's a built-in then that's a more "official" way to
test.

Thanks,

Nick

[Bryan Morse]

There isn't, at least to my knowledge. But you might find the "member" function useful. It tests to see if something is a member of a list.

<http://docs.racket-lang.org/reference/pairs.html?q=member#(def._((quote._~23~25kernel)._member))>