Pass symbol as an argument instead of a block

11 files changed, 19 insertions, 23 deletions

diff --git a/railties/lib/rails/application/routes_reloader.rb b/railties/lib/rails/application/routes_reloader.rb
index 737977adf9..cf0a4e128f 100644
--- a/railties/lib/rails/application/routes_reloader.rb
+++ b/railties/lib/rails/application/routes_reloader.rb
@@ -41,9 +41,7 @@ module Rails
       end
 
       def finalize!
-        route_sets.each do |routes|
-          routes.finalize!
-        end
+        route_sets.each(&:finalize!)
       end
 
       def revert
diff --git a/railties/lib/rails/commands/plugin.rb b/railties/lib/rails/commands/plugin.rb
index 95bbdd4cdf..52d8966ead 100644
--- a/railties/lib/rails/commands/plugin.rb
+++ b/railties/lib/rails/commands/plugin.rb
@@ -11,7 +11,7 @@ else
               end
     if File.exist?(railsrc)
       extra_args_string = File.read(railsrc)
-      extra_args = extra_args_string.split(/\n+/).flat_map {|l| l.split}
+      extra_args = extra_args_string.split(/\n+/).flat_map(&:split)
       puts "Using #{extra_args.join(" ")} from #{railsrc}"
       ARGV.insert(1, *extra_args)
     end
diff --git a/railties/lib/rails/generators.rb b/railties/lib/rails/generators.rb
index bf2390cb7e..e25c364178 100644
--- a/railties/lib/rails/generators.rb
+++ b/railties/lib/rails/generators.rb
@@ -153,7 +153,7 @@ module Rails
     def self.invoke(namespace, args=ARGV, config={})
       names = namespace.to_s.split(':')
       if klass = find_by_namespace(names.pop, names.any? && names.join(':'))
-        args << "--help" if args.empty? && klass.arguments.any? { |a| a.required? }
+        args << "--help" if args.empty? && klass.arguments.any?(&:required?)
         klass.start(args, config)
       else
         options     = sorted_groups.map(&:last).flatten
@@ -226,7 +226,7 @@ module Rails
 
     def self.public_namespaces
       lookup!
-      subclasses.map { |k| k.namespace }
+      subclasses.map(&:namespace)
     end
 
     def self.print_generators
diff --git a/railties/lib/rails/generators/actions.rb b/railties/lib/rails/generators/actions.rb
index ffdb314612..5373121835 100644
--- a/railties/lib/rails/generators/actions.rb
+++ b/railties/lib/rails/generators/actions.rb
@@ -189,7 +189,7 @@ module Rails
       #   generate(:authenticated, "user session")
       def generate(what, *args)
         log :generate, what
-        argument = args.flat_map {|arg| arg.to_s }.join(" ")
+        argument = args.flat_map(&:to_s).join(" ")
 
         in_root { run_ruby_script("bin/rails generate #{what} #{argument}", verbose: false) }
       end
diff --git a/railties/lib/rails/generators/base.rb b/railties/lib/rails/generators/base.rb
index 9af6435f23..813b8b629e 100644
--- a/railties/lib/rails/generators/base.rb
+++ b/railties/lib/rails/generators/base.rb
@@ -273,7 +273,7 @@ module Rails
 
         # Use Rails default banner.
         def self.banner
-          "rails generate #{namespace.sub(/^rails:/,'')} #{self.arguments.map{ |a| a.usage }.join(' ')} [options]".gsub(/\s+/, ' ')
+          "rails generate #{namespace.sub(/^rails:/,'')} #{self.arguments.map(&:usage).join(' ')} [options]".gsub(/\s+/, ' ')
         end
 
         # Sets the base_name taking into account the current class namespace.
diff --git a/railties/lib/rails/generators/named_base.rb b/railties/lib/rails/generators/named_base.rb
index b7da44ca2d..397e1e73f1 100644
--- a/railties/lib/rails/generators/named_base.rb
+++ b/railties/lib/rails/generators/named_base.rb
@@ -99,7 +99,7 @@ module Rails
         end
 
         def class_name
-          (class_path + [file_name]).map!{ |m| m.camelize }.join('::')
+          (class_path + [file_name]).map!(&:camelize).join('::')
         end
 
         def human_name
@@ -156,7 +156,7 @@ module Rails
 
         def assign_names!(name) #:nodoc:
           @class_path = name.include?('/') ? name.split('/') : name.split('::')
-          @class_path.map! { |m| m.underscore }
+          @class_path.map!(&:underscore)
           @file_name = @class_path.pop
         end
 
diff --git a/railties/lib/rails/generators/rails/app/app_generator.rb b/railties/lib/rails/generators/rails/app/app_generator.rb
index 9110c129d1..f8a8ae90d9 100644
--- a/railties/lib/rails/generators/rails/app/app_generator.rb
+++ b/railties/lib/rails/generators/rails/app/app_generator.rb
@@ -260,9 +260,7 @@ module Rails
       public_task :generate_spring_binstubs
 
       def run_after_bundle_callbacks
-        @after_bundle_callbacks.each do |callback|
-          callback.call
-        end
+        @after_bundle_callbacks.each(&:call)
       end
 
     protected
diff --git a/railties/lib/rails/generators/resource_helpers.rb b/railties/lib/rails/generators/resource_helpers.rb
index 4669935156..3f84d76ae0 100644
--- a/railties/lib/rails/generators/resource_helpers.rb
+++ b/railties/lib/rails/generators/resource_helpers.rb
@@ -39,7 +39,7 @@ module Rails
         def assign_controller_names!(name)
           @controller_name = name
           @controller_class_path = name.include?('/') ? name.split('/') : name.split('::')
-          @controller_class_path.map! { |m| m.underscore }
+          @controller_class_path.map!(&:underscore)
           @controller_file_name = @controller_class_path.pop
         end
 
@@ -48,7 +48,7 @@ module Rails
         end
 
         def controller_class_name
-          (controller_class_path + [controller_file_name]).map!{ |m| m.camelize }.join('::')
+          (controller_class_path + [controller_file_name]).map!(&:camelize).join('::')
         end
 
         def controller_i18n_scope
diff --git a/railties/lib/rails/info.rb b/railties/lib/rails/info.rb
index 94ede76932..5909446b66 100644
--- a/railties/lib/rails/info.rb
+++ b/railties/lib/rails/info.rb
@@ -8,7 +8,7 @@ module Rails
     mattr_accessor :properties
     class << (@@properties = [])
       def names
-        map {|val| val.first }
+        map(&:first)
       end
 
       def value_for(property_name)
@@ -26,7 +26,7 @@ module Rails
       end
 
       def to_s
-        column_width = properties.names.map {|name| name.length}.max
+        column_width = properties.names.map(&:length).max
         info = properties.map do |name, value|
           value = value.join(", ") if value.is_a?(Array)
           "%-#{column_width}s   %s" % [name, value]
diff --git a/railties/lib/rails/paths.rb b/railties/lib/rails/paths.rb
index d11804af17..5458036219 100644
--- a/railties/lib/rails/paths.rb
+++ b/railties/lib/rails/paths.rb
@@ -77,23 +77,23 @@ module Rails
       end
 
       def all_paths
-        values.tap { |v| v.uniq! }
+        values.tap(&:uniq!)
       end
 
       def autoload_once
-        filter_by { |p| p.autoload_once? }
+        filter_by(&:autoload_once?)
       end
 
       def eager_load
-        filter_by { |p| p.eager_load? }
+        filter_by(&:eager_load?)
       end
 
       def autoload_paths
-        filter_by { |p| p.autoload? }
+        filter_by(&:autoload?)
       end
 
       def load_paths
-        filter_by { |p| p.load_path? }
+        filter_by(&:load_path?)
       end
 
     private
diff --git a/railties/test/railties/engine_test.rb b/railties/test/railties/engine_test.rb
index 6239af2066..260ee0eda9 100644
--- a/railties/test/railties/engine_test.rb
+++ b/railties/test/railties/engine_test.rb
@@ -518,7 +518,7 @@ YAML
 
       def call(env)
         response = @app.call(env)
-        response[2].each { |b| b.upcase! }
+        response[2].each(&:upcase!)
         response
       end
     end