Alvin Ashcraft's Morning Dew » resharper http://www.alvinashcraft.com Your Source for .NET Development Resources Fri, 10 Feb 2012 12:57:54 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 C# + ReSharper = Awesome: Tip #8 – Extract Class From Parameters http://www.alvinashcraft.com/2012/01/23/c-resharper-awesome-tip-8-extract-class-from-parameters/ http://www.alvinashcraft.com/2012/01/23/c-resharper-awesome-tip-8-extract-class-from-parameters/#comments Tue, 24 Jan 2012 01:37:23 +0000 Alvin Ashcraft http://www.alvinashcraft.com/?p=2129 This is the eighth in a series of quick how-to articles on ReSharper.

Tip #8 – Extract Class From Parameters

Use: If you find yourself passing a set of related values to a method, you should probably put all of those items into a single class or struct. From JetBrains:

This refactoring creates a new class or struct and converts parameters of the selected method into encapsulated fields of the newly created type (with constructor taking parameters, fields to store values and properties to retrieve values). Usages of parameters are converted to usages of properties of created type.

Before
   1:      public class EmployeeUtilities
   2:      {
   3:          public bool ValidateTerminatedEmployeeInfo(int employeeId
   4:                                                   , string firstName
   5:                                                   , string lastName
   6:                                                   , DateTime hireDate
   7:                                                   , DateTime terminateDate)
   8:          {
   9:              if (employeeId > -1 && 
  10:                  !String.IsNullOrWhiteSpace(firstName) && 
  11:                  !String.IsNullOrWhiteSpace(lastName) &&
  12:                  hireDate < DateTime.Now && 
  13:                  terminateDate > hireDate)
  14:              {
  15:                  // do awesome stuff
  16:                  return true;
  17:              }
  18:   
  19:              return false;
  20:          }
  21:      }
Right-click the method

image

Extract Class From Parameters

SNAGHTML10f0d4a5

After
   1:      public class EmployeeInfo
   2:      {
   3:          private int _employeeId;
   4:          private string _firstName;
   5:          private string _lastName;
   6:          private DateTime _hireDate;
   7:          private DateTime _terminateDate;
   8:   
   9:          public EmployeeInfo(int employeeId, string firstName, string lastName, DateTime hireDate, DateTime terminateDate)
  10:          {
  11:              _employeeId = employeeId;
  12:              _firstName = firstName;
  13:              _lastName = lastName;
  14:              _hireDate = hireDate;
  15:              _terminateDate = terminateDate;
  16:          }
  17:   
  18:          public int EmployeeId
  19:          {
  20:              get { return _employeeId; }
  21:          }
  22:   
  23:          public string FirstName
  24:          {
  25:              get { return _firstName; }
  26:          }
  27:   
  28:          public string LastName
  29:          {
  30:              get { return _lastName; }
  31:          }
  32:   
  33:          public DateTime HireDate
  34:          {
  35:              get { return _hireDate; }
  36:          }
  37:   
  38:          public DateTime TerminateDate
  39:          {
  40:              get { return _terminateDate; }
  41:          }
  42:      }
  43:   
  44:      public class EmployeeUtilities
  45:      {
  46:          public bool ValidateTerminatedEmployeeInfo(EmployeeInfo employeeInfo)
  47:          {
  48:              if (employeeInfo.EmployeeId > -1 && 
  49:                  !String.IsNullOrWhiteSpace(employeeInfo.FirstName) && 
  50:                  !String.IsNullOrWhiteSpace(employeeInfo.LastName) &&
  51:                  employeeInfo.HireDate < DateTime.Now && 
  52:                  employeeInfo.TerminateDate > employeeInfo.HireDate)
  53:              {
  54:                  // do awesome stuff
  55:                  return true;
  56:              }
  57:   
  58:              return false;
  59:          }
  60:      }

Happy coding!

 

]]> http://www.alvinashcraft.com/2012/01/23/c-resharper-awesome-tip-8-extract-class-from-parameters/feed/ 2 C# + ReSharper = Awesome: Tip #7–Move String to Resource http://www.alvinashcraft.com/2012/01/20/c-resharper-awesome-tip-7move-string-to-resource/ http://www.alvinashcraft.com/2012/01/20/c-resharper-awesome-tip-7move-string-to-resource/#comments Fri, 20 Jan 2012 20:41:57 +0000 Alvin Ashcraft http://www.alvinashcraft.com/?p=2121 This is the seventh in a series of quick how-to articles on ReSharper.

Tip #7 – Move String to Resource

Use: Moves a string into a resource file to enable localization.

Tip: Ensure your project contains at least one Resource (resx) file or the operation will fail.

Before
   1:       public string YouRock()
   2:       {
   3:           return "No, YOU rock Mr. Method-Caller!";
   4:       }
Right-click the string –> Refactor –> Refactor This…

image

Move to Resource

SNAGHTML6f7080

After
   1:       public string YouRock()
   2:       {
   3:           return StringResources.No_YOU_rock_Mr_Method_Caller;
   4:       }

Happy coding!

 

]]> http://www.alvinashcraft.com/2012/01/20/c-resharper-awesome-tip-7move-string-to-resource/feed/ 0 Dew Drop – January 19, 2012 (#1,246) http://www.alvinashcraft.com/2012/01/19/dew-drop-january-19-2012-1246/ http://www.alvinashcraft.com/2012/01/19/dew-drop-january-19-2012-1246/#comments Thu, 19 Jan 2012 12:45:16 +0000 Alvin Ashcraft http://www.alvinashcraft.com/?p=2113 Top Links

 

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Programming Entity Framework: Code First: Code First by Julia Lerman

 

]]> http://www.alvinashcraft.com/2012/01/19/dew-drop-january-19-2012-1246/feed/ 0 Dew Drop – January 13, 2012 (#1,241) http://www.alvinashcraft.com/2012/01/13/dew-drop-january-13-2012-1241/ http://www.alvinashcraft.com/2012/01/13/dew-drop-january-13-2012-1241/#comments Fri, 13 Jan 2012 14:01:14 +0000 Alvin Ashcraft http://www.alvinashcraft.com/?p=2097 Top Links

 

.NET / Visual Studio

 

Web Development

 

Design / Methodology / Testing

 

Silverlight / WPF / Windows Phone

 

Podcasts / Screencasts / Videos

 

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More Link Collections

 

The Geek Shelf

Professional iPhone Programming with MonoTouch and .NET/C# (Wrox Programmer to Programmer) by Wallace B. McClure

 

]]> http://www.alvinashcraft.com/2012/01/13/dew-drop-january-13-2012-1241/feed/ 0 C# + ReSharper = Awesome: Tip #6 – Extract Interface http://www.alvinashcraft.com/2012/01/09/c-resharper-awesome-tip-6-extract-interface/ http://www.alvinashcraft.com/2012/01/09/c-resharper-awesome-tip-6-extract-interface/#comments Mon, 09 Jan 2012 17:15:35 +0000 Alvin Ashcraft http://www.alvinashcraft.com/?p=2089 This is the sixth in a series of quick how-to articles on ReSharper.

Tip #6 – Extract Interface

Use: Creates a new interface based on the selected class and updates the class to implement the new interface. This is most useful when working with an existing code base because we all define our interfaces first when doing greenfield development, right?  Smile

Before
   1:      public class Shooter
   2:      {
   3:          public string Name { get; set; }
   4:   
   5:          public string ReleaseDate { get; set; }
   6:   
   7:          public int MaxPlayers { get; set; }
   8:   
   9:          public bool HasZombies { get; set; }
  10:   
  11:          public bool IsHalo { get; set; }
  12:   
  13:          public void Borrow()
  14:          {
  15:              //TODO: Implement borrow logic.
  16:          }
  17:      }
Right-click the class

image

Select members

SNAGHTML4614fae1

After
   1:      public interface IGame
   2:      {
   3:          string Name { get; set; }
   4:          string ReleaseDate { get; set; }
   5:          int MaxPlayers { get; set; }
   6:          void Borrow();
   7:      }
   8:   
   9:      public class Shooter : IGame
  10:      {
  11:          public string Name { get; set; }
  12:   
  13:          public string ReleaseDate { get; set; }
  14:   
  15:          public int MaxPlayers { get; set; }
  16:   
  17:          public bool HasZombies { get; set; }
  18:   
  19:          public bool IsHalo { get; set; }
  20:   
  21:          public void Borrow()
  22:          {
  23:              //TODO: Implement borrow logic.
  24:          }
  25:      }

Happy coding!

 

]]> http://www.alvinashcraft.com/2012/01/09/c-resharper-awesome-tip-6-extract-interface/feed/ 0 C# + ReSharper = Awesome: Tip #5 – Replace Constructor with Factory Method http://www.alvinashcraft.com/2011/12/22/c-resharper-awesome-tip-5-replace-constructor-with-factory-method/ http://www.alvinashcraft.com/2011/12/22/c-resharper-awesome-tip-5-replace-constructor-with-factory-method/#comments Thu, 22 Dec 2011 16:19:35 +0000 Alvin Ashcraft http://www.alvinashcraft.com/?p=2055 This is the fifth in a series of quick how-to articles on ReSharper.

Tip #5 – Replace Constructor with Factory Method

Use: If an application must control how or when new instances of classes are created, a factory method can achieve this. ReSharper makes it simple to wrap a constructor with a static factory method.

Before
   1:      public class Car
   2:      {
   3:          private IList<IPart> _parts;
   4:   
   5:           public Car(IList<IPart> parts)
   6:           {
   7:               _parts = parts;
   8:           }
   9:      }
Right-click the constructor

image

Name your method or accept the default

SNAGHTML1ecbd865

After
   1:      public class Car
   2:      {
   3:          public static Car CreateCar(IList<IPart> parts)
   4:          {
   5:              return new Car(parts);
   6:          }
   7:   
   8:          private IList<IPart> _parts;
   9:   
  10:          private Car(IList<IPart> parts)
  11:           {
  12:               _parts = parts;
  13:           }
  14:      }

 

Happy coding!

 

]]> http://www.alvinashcraft.com/2011/12/22/c-resharper-awesome-tip-5-replace-constructor-with-factory-method/feed/ 0 C# + ReSharper = Awesome: Tip #4 – Convert Abstract Class to Interface http://www.alvinashcraft.com/2011/12/20/c-resharper-awesome-tip-4-convert-abstract-class-to-interface/ http://www.alvinashcraft.com/2011/12/20/c-resharper-awesome-tip-4-convert-abstract-class-to-interface/#comments Tue, 20 Dec 2011 18:09:07 +0000 Alvin Ashcraft http://www.alvinashcraft.com/?p=2044 This is the fourth in a series of quick how-to articles on ReSharper.

Tip #4 – Convert Abstract Class to Interface

Use: This is used when the class(es) that will be inheriting from a base class also need to inherit from another base class. Derived types can inherit from only one base class but can implement multiple interfaces.

Before
   1:      public abstract class Book
   2:      {
   3:          public abstract string Title { get; set; }
   4:   
   5:          public abstract string Year { get; set; }
   6:   
   7:          public abstract string Author { get; set; }
   8:   
   9:          public abstract void Lend();
  10:   
  11:          public abstract void AddToInventory();
  12:      }
Right-click the class

image

After
   1:      public interface Book
   2:      {
   3:          string Title { get; set; }
   4:          string Year { get; set; }
   5:          string Author { get; set; }
   6:          void Lend();
   7:          void AddToInventory();
   8:      }

Note: Notice that this refactoring does not change the name of the type. At this point, there will be a squiggly line under the interface’s name, Book. Placing the cursor on Book and pressing <Alt+Enter> will prompt ReSharper to rename it to IBook.

 

Happy coding!

 

]]> http://www.alvinashcraft.com/2011/12/20/c-resharper-awesome-tip-4-convert-abstract-class-to-interface/feed/ 2 C# + ReSharper = Awesome: Tip #3 – Convert Into LINQ Expression http://www.alvinashcraft.com/2011/12/16/c-resharper-awesome-tip-3-convert-into-linq-expression/ http://www.alvinashcraft.com/2011/12/16/c-resharper-awesome-tip-3-convert-into-linq-expression/#comments Fri, 16 Dec 2011 21:44:33 +0000 Alvin Ashcraft http://www.alvinashcraft.com/?p=2034 This is the third in a series of quick how-to articles on Resharper.

Tip #3 – Convert Into LINQ Expression

Use: ForEach blocks that perform simple bits of logic can often times be rewritten as lambda expressions. This reduces the number of lines of code and usually makes the code more readable.

Before
         public IList<Album> FindAlbumsToGiveAway(IList<Album> albums)
         {
             var badAlbums = new List<Album>();

             foreach (Album album in albums)
             {
                 if (album.Genre == "Country")
                     badAlbums.Add(album);
             }

             return badAlbums;
         }
Press <Alt+Enter>

image

After
         public IList<Album> FindAlbumsToGiveAway(IList<Album> albums)
         {
             return albums.Where(album => album.Genre == "Country").ToList();
         }

Happy coding!

 

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]]> http://www.alvinashcraft.com/2011/12/16/c-resharper-awesome-tip-3-convert-into-linq-expression/feed/ 0 C# + ReSharper = Awesome: Tip #2 – Create Field http://www.alvinashcraft.com/2011/12/14/c-resharper-awesome-tip-2-create-field/ http://www.alvinashcraft.com/2011/12/14/c-resharper-awesome-tip-2-create-field/#comments Wed, 14 Dec 2011 18:54:35 +0000 Alvin Ashcraft http://www.alvinashcraft.com/?p=2025 This is the second in a series of quick how-to posts on ReSharper.

Tip #2 – Create Field

Use: Within the body of a class or property, you can type the name of a non-existent variable name. When you place your cursor on the variable, ReSharper provides several options to resolve the impending compilation error. Create Field is one of the options.

Before
   1:          public void AddAlbum(string album)
   2:          {
   3:              if (String.IsNullOrWhiteSpace(album))
   4:                  throw new ArgumentOutOfRangeException("album",
   5:                                                        album,
   6:                                                        "Please provide an album name.");
   7:   
   8:              _albums.Add(album);
   9:          }
Press <Alt+Enter>

image

After
        private IList<string> _albums = new List<string>();

        public void AddAlbum(string album)
        {
            if (String.IsNullOrWhiteSpace(album))
                throw new ArgumentOutOfRangeException("album",
                                                      album,
                                                      "Please provide an album name.");

            _albums.Add(album);
        }

Note: I chose the type IList<string>. The default type selected by ReSharper in this case was object. I also added the initializer to the field to avoid null reference exceptions. Please don’t take any of these examples as best coding practices, they are contrived to demonstrate a particular refactoring.

Happy coding!

 

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]]> http://www.alvinashcraft.com/2011/12/14/c-resharper-awesome-tip-2-create-field/feed/ 0 C# + ReSharper = Awesome: Tip #1 – To Automatic Property http://www.alvinashcraft.com/2011/12/12/c-resharper-awesome-tip-1-to-automatic-property/ http://www.alvinashcraft.com/2011/12/12/c-resharper-awesome-tip-1-to-automatic-property/#comments Tue, 13 Dec 2011 02:12:25 +0000 Alvin Ashcraft http://www.alvinashcraft.com/?p=2015 This is the first in a series of quick how-to posts on ReSharper. I love ReSharper. It is a tool that I use every day and don’t really realize how much I rely on it until I use a machine without ReSharper installed.

Tip #1 – To Automatic Property

Use: If a public property does not contain any logic, it can be converted to an auto-property, removing the corresponding private field and replacing usages of the private field.

Before
   1:          private string _name;
   2:          public string Name
   3:          {
   4:              get { return _name; }
   5:              set { _name = value; }
   6:          }
   7:   
   8:          public void CheckName()
   9:          {
  10:              if (_name == "Dark Side of the Moon")
  11:                  Console.WriteLine("Awesome");
  12:          }

Place your cursor on the Name property and…

Press <Alt-Enter>

image

After
   1:          public string Name { get; set; }
   2:   
   3:          public void CheckName()
   4:          {
   5:              if (Name == "Dark Side of the Moon")
   6:                  Console.WriteLine("Awesome");
   7:          }
 

Happy coding!

 

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]]> http://www.alvinashcraft.com/2011/12/12/c-resharper-awesome-tip-1-to-automatic-property/feed/ 1