On Wed, Oct 27, 2010 at 08:55:36PM -0700, Darren Duncan wrote: > Stephen Mosher (via RT) wrote: > >Attached is a diff against rakudo/src/core/Any-list.pm which adds support to > >reduce() for higher-arity functions. It ensures arity-list agreement and is > >generally safe. Other than the test, the functionality was already > >present... it needed two lines commented out, two uncommented. Since tests > >passed and there were no explanatory comments in the file, jnthn suggested I > >mail in a diff. Here it is. > > What is a common or fundamentally important example of an N-adic > function whose base operation takes 3 or more operands, such that > reduce() would be useful?
At one point we had the higher-arity capability in reduce(), and then took it out because it didn't seem to make much sense. So, I agree with Darren that we need to see a use case or example (or otherwise some "approval" in the spec) before we restore this capability. Pm
