
4 Jan
2012
4 Jan
'12
7:59 a.m.
On Wed, Jan 4, 2012 at 8:15 PM, Yucheng Zhang
I expected the type of 'x' to be universally quantified, and thus can be unified with 'forall a. a' with no problem.
I've never been thinking in a detailed level, and the 'x' appears to be able to take any type, and thus the wrong expectation. Thanks for all the input from all.