On 02/06/19 12:25 AM, Chris Muller wrote:
> The method only uses #do:, which is required of all Collections, so
> it's not any less clear than #do: on those objects.

Chris,

#do: does yield a sequence but the order is not guaranteed to be same 
from one send to another.

The provided test case for #joinSeparatedBy: assumed a particular 
sequence. When Christoph proposed to relax it for all Collections, the 
existing test cases will also have to change to avoid false fails.

Regards .. Subbu