lib/rext/string/helpers.rb in visionmedia-rext-0.0.3 vs lib/rext/string/helpers.rb in visionmedia-rext-0.0.4

@@ -174,19 +174,31 @@
   def singular?
     !plural?
   end
 
   ##
-  # First character.
+  # First +n+ character(s).
+  #
+  # === Examples
+  #
+  #   'foo'.first     # => f
+  #   'foo'.first(2)  # => fo
+  #
 
-  def first 
-    self[0,1]
+  def first n = 1
+    self[0,n]
   end
 
   ##
-  # Last character.
-
-  def last
-    self[-1, 1]
+  # Last +n+ character(s).
+  #
+  # === Examples
+  #
+  #   'bar'.last     # => r
+  #   'bar'.last(2)  # => ar
+  #
+  
+  def last n = 1
+    self[-n, n]
   end
   
 end