More symbols for send and respond_to?.

Signed-off-by: Jeremy Kemper <jeremy@bitsweat.net>

activemodel/lib/active_model/validations/exclusion.rb

@@ -26,7 +26,7 @@ def validates_exclusion_of(*attr_names)
 
         enum = configuration[:in] || configuration[:within]
 
-        raise(ArgumentError, "An object with the method include? is required must be supplied as the :in option of the configuration hash") unless enum.respond_to?("include?")
+        raise(ArgumentError, "An object with the method include? is required must be supplied as the :in option of the configuration hash") unless enum.respond_to?(:include?)
 
         validates_each(attr_names, configuration) do |record, attr_name, value|
           record.errors.add(attr_name, configuration[:message] % value) if enum.include?(value)

activemodel/lib/active_model/validations/inclusion.rb

@@ -26,7 +26,7 @@ def validates_inclusion_of(*attr_names)
 
         enum = configuration[:in] || configuration[:within]
 
-        raise(ArgumentError, "An object with the method include? is required must be supplied as the :in option of the configuration hash") unless enum.respond_to?("include?")
+        raise(ArgumentError, "An object with the method include? is required must be supplied as the :in option of the configuration hash") unless enum.respond_to?(:include?)
 
         validates_each(attr_names, configuration) do |record, attr_name, value|
           record.errors.add(attr_name, configuration[:message] % value) unless enum.include?(value)

activerecord/lib/active_record/attribute_methods.rb

@@ -330,8 +330,8 @@ def query_attribute(attr_name)
       end
     end
 
-    # A Person object with a name attribute can ask <tt>person.respond_to?("name")</tt>,
-    # <tt>person.respond_to?("name=")</tt>, and <tt>person.respond_to?("name?")</tt>
+    # A Person object with a name attribute can ask <tt>person.respond_to?(:name)</tt>,
+    # <tt>person.respond_to?(:name=)</tt>, and <tt>person.respond_to?(:name?)</tt>
     # which will all return +true+.
     alias :respond_to_without_attributes? :respond_to?
     def respond_to?(method, include_priv = false)

activerecord/lib/active_record/validations.rb

@@ -54,7 +54,7 @@ def add(attribute, message = nil, options = {})
     def add_on_empty(attributes, custom_message = nil)
       for attr in [attributes].flatten
         value = @base.respond_to?(attr.to_s) ? @base.send(attr.to_s) : @base[attr.to_s]
-        is_empty = value.respond_to?("empty?") ? value.empty? : false        
+        is_empty = value.respond_to?(:empty?) ? value.empty? : false
         add(attr, :empty, :default => custom_message) unless !value.nil? && !is_empty
       end
     end
@@ -751,7 +751,7 @@ def validates_inclusion_of(*attr_names)
 
         enum = configuration[:in] || configuration[:within]
 
-        raise(ArgumentError, "An object with the method include? is required must be supplied as the :in option of the configuration hash") unless enum.respond_to?("include?")
+        raise(ArgumentError, "An object with the method include? is required must be supplied as the :in option of the configuration hash") unless enum.respond_to?(:include?)
 
         validates_each(attr_names, configuration) do |record, attr_name, value|
           unless enum.include?(value)
@@ -785,7 +785,7 @@ def validates_exclusion_of(*attr_names)
 
         enum = configuration[:in] || configuration[:within]
 
-        raise(ArgumentError, "An object with the method include? is required must be supplied as the :in option of the configuration hash") unless enum.respond_to?("include?")
+        raise(ArgumentError, "An object with the method include? is required must be supplied as the :in option of the configuration hash") unless enum.respond_to?(:include?)
 
         validates_each(attr_names, configuration) do |record, attr_name, value|
           if enum.include?(value)

activeresource/lib/active_resource/base.rb

@@ -915,8 +915,8 @@ def load(attributes)
     alias_method :respond_to_without_attributes?, :respond_to?
 
     # A method to determine if an object responds to a message (e.g., a method call). In Active Resource, a Person object with a
-    # +name+ attribute can answer <tt>true</tt> to <tt>my_person.respond_to?("name")</tt>, <tt>my_person.respond_to?("name=")</tt>, and
-    # <tt>my_person.respond_to?("name?")</tt>.
+    # +name+ attribute can answer <tt>true</tt> to <tt>my_person.respond_to?(:name)</tt>, <tt>my_person.respond_to?(:name=)</tt>, and
+    # <tt>my_person.respond_to?(:name?)</tt>.
     def respond_to?(method, include_priv = false)
       method_name = method.to_s
       if attributes.nil?