diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | lib/set.rb | 8 |
2 files changed, 9 insertions, 4 deletions
@@ -1,3 +1,8 @@ +Fri May 8 02:30:14 2009 Akinori MUSHA <knu@iDaemons.org> + + * lib/set.rb (SortedSet#add): Do not require each newly added + element to be Comparable but to respond to <=>. [ruby-dev:38371] + Thu May 7 21:42:51 2009 Yusuke Endoh <mame@tsg.ne.jp> * test/ruby/test_rubyoptions.rb (test_indentation_check): add a test diff --git a/lib/set.rb b/lib/set.rb index 6d298d3f85..8f2bef91ba 100644 --- a/lib/set.rb +++ b/lib/set.rb @@ -456,8 +456,8 @@ end # yielded in sorted order (according to the return values of their # #<=> methods) when iterating over them. # -# All elements that are added to a SortedSet must include the -# Comparable module. +# All elements that are added to a SortedSet must respond to the <=> +# method for comparison. # # Also, all elements must be <em>mutually comparable</em>: <tt>el1 <=> # el2</tt> must not return <tt>nil</tt> for any elements <tt>el1</tt> @@ -506,7 +506,7 @@ class SortedSet < Set end def add(o) - o.is_a?(Comparable) or raise ArgumentError, "value must be comparable" + o.respond_to?(:<=>) or raise ArgumentError, "value must repond to <=>" super end alias << add @@ -529,7 +529,7 @@ class SortedSet < Set end def add(o) - o.is_a?(Comparable) or raise ArgumentError, "value must be comparable" + o.respond_to?(:<=>) or raise ArgumentError, "value must respond to <=>" @keys = nil super end |