Is there a way to auto-generate GetHashCode and Equals with ReSharper?

Question

In eclipse, when I code in Java, there is a feature to auto-generate a basic, efficient, and bug free implementation of hashCode() and equals() without consuming brain power.

Is there a similar feature either built-in in Visual Studio or in ReSharper ?

Answer 1

Yes, Resharper can do that. With cursor inside your type, open the “Generate code” menu (Alt+Ins depending on settings or Resharper -> Edit -> Generate Code), and select “Equality members”:

This opens a window where you can select which members are used for equality, along with some options about the generated code (e.g. should your type implement IEquatable<T>):

If you start with a simple type with two properties:

class Person {     public string FirstName { get; private set; }     public string LastName { get; private set; } } 

Then the generated code may look something like:

class Person : IEquatable<Person> {     public string FirstName { get; private set; }     public string LastName { get; private set; }      public bool Equals(Person other)     {         if (ReferenceEquals(null, other))             return false;         if (ReferenceEquals(this, other))             return true;         return string.Equals(FirstName, other.FirstName) && string.Equals(LastName, other.LastName);     }      public override bool Equals(object obj)     {         if (ReferenceEquals(null, obj))             return false;         if (ReferenceEquals(this, obj))             return true;         if (obj.GetType() != this.GetType())             return false;         return Equals((Person)obj);     }      public override int GetHashCode()     {         unchecked         {             return ((FirstName != null ? FirstName.GetHashCode() : 0) * 397) ^ (LastName != null ? LastName.GetHashCode() : 0);         }     } } 

Answer 2

Since you asked if also Visual Studio can do that: since XI.2017 it finaly can generate something useful.

Using ctr+. inside class and choosing "Generate Equals and GetHashCode"

See https://stackoverflow.com/a/48441971/4547594