lib/bio/util/restriction_enzyme/single_strand.rb in bio-1.2.1 vs lib/bio/util/restriction_enzyme/single_strand.rb in bio-1.3.0

@@ -3,11 +3,11 @@
 #
 # Author::    Trevor Wennblom  <mailto:[e-mail]>
 # Copyright:: Copyright (c) 2005-2007 Midwinter Laboratories, LLC (http://midwinterlabs.com)
 # License::   The Ruby License
 #
-#  $Id: single_strand.rb,v 1.7 2007/07/16 19:28:48 k Exp $
+#  $Id:$
 #
 
 require 'bio/util/restriction_enzyme'
 require 'bio/sequence'
 
@@ -131,11 +131,11 @@
     return stripped if @cut_locations_in_enzyme_notation.min == nil
     left = (@cut_locations_in_enzyme_notation.min < 0 ? 'n' * @cut_locations_in_enzyme_notation.min.abs : '')
 
     # Add one more 'n' if a cut is at the last position 
     right = ( (@cut_locations_in_enzyme_notation.max >= @stripped.length) ? ('n' * (@cut_locations_in_enzyme_notation.max - @stripped.length + 1)) : '')
-    [left, stripped, right].to_s
+    [left, stripped, right].join('')
   end
 
   # The sequence with 'n' pads, cut symbols, and spacing for alignment.
   # * <code>SingleStrand.new('garraxt', [-2, 1, 7]).with_spaces # => "n^n g^a r r a x t^n"</code>
   #
@@ -181,17 +181,18 @@
 
   # Tadayoshi Funaba's method as discussed in Programming Ruby 2ed, p390
   def self.once(*ids)
     for id in ids
       module_eval <<-"end;"
-        alias_method :__#{id.to_i}__, :#{id.to_s}
-        private :__#{id.to_i}__
+        alias_method :__#{id.__id__}__, :#{id.to_s}
+        private :__#{id.__id__}__
         def #{id.to_s}(*args, &block)
-          (@__#{id.to_i}__ ||= [__#{id.to_i}__(*args, &block)])[0]
+          (@__#{id.__id__}__ ||= [__#{id.__id__}__(*args, &block)])[0]
         end
       end;
     end
   end
+  private_class_method :once
 
   once :pattern, :with_cut_symbols, :with_spaces, :to_re
 
 end # SingleStrand
 end # RestrictionEnzyme