Fasterer: Use &:symbol is faster

Calling argumentless methods within blocks is slower than using
symbol to proc.

app/controllers/contexts_controller.rb

@@ -130,7 +130,7 @@ class ContextsController < ApplicationController
   # actions in the context will also be deleted.
   def destroy
     # make sure the deleted recurrence patterns are removed from associated todos
-    @context.recurring_todos.each { |rt| rt.clear_todos_association } unless @context.recurring_todos.nil?
+    @context.recurring_todos.each(&:clear_todos_association) unless @context.recurring_todos.nil?
 
     @context.destroy
     respond_to do |format|

app/controllers/projects_controller.rb

@@ -267,7 +267,7 @@ class ProjectsController < ApplicationController
   end
 
   def destroy
-    @project.recurring_todos.each {|rt| rt.remove_from_project!}
+    @project.recurring_todos.each(&:remove_from_project!)
     @project.destroy
 
     respond_to do |format|

app/models/todo.rb

@@ -188,7 +188,7 @@ class Todo < ActiveRecord::Base
 
   def touch_predecessors
     self.touch
-    predecessors.each { |p| p.touch_predecessors }
+    predecessors.each(&:touch_predecessors)
   end
 
   def removed_predecessors

test/controllers/projects_controller_test.rb

@@ -162,7 +162,7 @@ class ProjectsControllerTest < ActionController::TestCase
   def test_text_feed_content_for_projects_with_no_actions
     login_as :admin_user
     p = projects(:timemachine)
-    p.todos.each { |t| t.destroy }
+    p.todos.each(&:destroy)
 
     get :index, { :format => "txt", :only_active_with_no_next_actions => true }
     assert (/^\s*BUILD A WORKING TIME MACHINE\s+0 actions. Project is active.\s*$/.match(@response.body))

test/models/context_test.rb

@@ -79,14 +79,14 @@ class ContextTest < ActiveSupport::TestCase
       @agenda.close!
     end
 
-    @agenda.todos.active.each {|t| t.complete! }
+    @agenda.todos.active.each(&:complete!)
     @agenda.close!
     assert @agenda.closed?
   end
 
   def test_activating_closed_context
     # given a context @agenda that is closed
-    @agenda.todos.active.each {|t| t.complete! }
+    @agenda.todos.active.each(&:complete!)
     @agenda.close!
     assert @agenda.closed?
 

test/models/project_test.rb

@@ -227,7 +227,7 @@ class ProjectTest < ActiveSupport::TestCase
     assert !p.stalled?, "completed projects are not stalled"
 
     p.activate!
-    p.todos.each{|t| t.complete!}
+    p.todos.each(&:complete!)
     assert p.todos.reload.active.empty?, "project should not have active todos"
     assert p.todos.reload.deferred_or_blocked.empty?, "there should not be deferred or blocked todos"
     assert p.reload.stalled?, "project should be stalled"