Hi -- On Wed, 8 Mar 2006, Brian Buckley wrote: > require 'facet/symbol/to_proc' > > [[1,2], [], [1,2,3]].map(&:length) #line 1 Blows up re undefined method > length for Fixnum? > > ["ab", "", "abc"].map(&:length) #line 2 => [2, 0, 3] but this works fine > > Why does the first line fail by trying to call method length on Fixnum? > Shouldn't it be calling length on Array (which is defined) and thus return > [2,0,3] ? Note the next line behaves as I'd expect, but for Strings. > > What's happening? I'm only guessing but could it be flattening the outer array? David -- David A. Black (dblack / wobblini.net) Ruby Power and Light, LLC (http://www.rubypowerandlight.com) "Ruby for Rails" chapters now available from Manning Early Access Program! http://www.manning.com/books/black