[Boost-users] swapping keys in multiindex

Hello, how can one swap keys in an *ordered* index of a multi index container? Well, you cannot say something like: blah.modify_key(blah.find(foo1), _1 = foo2); // from now index contains one element fewer, since // keys must be uniq blah.modify_key(blah.find(foo2), _1 = foo1); I dind't found a way in the manual to swap directly. --David