User blog comment:Wythagoras/Dollars Function/@comment-5029411-20130805231910

New angle bracket rules:

11. @{1} = @

11a. if @ is ->, then {2} is work.

@2 is any angle bracket.

12. [@@ 2{1}@2 ] = [@@ 2...[@@ 2[0]@2 ]...@2 ] (a nested).

Your angle bracket rule is slower than my angle bracket rule.