How to use IEquatable?

[Paul E Collins]

I want to implement the equality operation for one of my classes, so
that I can use List<blah>.Contains for a list of those objects instead
of writing a loop to compare with each item in the list.

When I add ": IEquatable" to my class definition, I get a compile
error:
"Using the generic type 'System.IEquatable<T>' requires '1' type
arguments."

What type am I supposed to specify? I just want to write a method that
compares two instances for equality, and the .NET 2.0 docs suggest I
should be using this rather than overriding Equals.

Eq.

[Patrick H]

Using your info for example it would be IEquatable<List<blah>>
On Apr 5, 5:30 pm, "Paul E Collins" <[e-mail]>
wrote:

I want to implement the equality operation for one of my classes, so
that I can use List<blah>.Contains for a list of those objects instead
of writing a loop to compare with each item in the list.

When I add ": IEquatable" to my class definition, I get a compile
error:
"Using the generic type 'System.IEquatable<T>' requires '1' type
arguments."

What type am I supposed to specify? I just want to write a method that
compares two instances for equality, and the .NET 2.0 docs suggest I
should be using this rather than overriding Equals.

Eq.

[=?ISO-8859-1?Q?G=F6ran_Andersson?=]

Paul E Collins wrote:

I want to implement the equality operation for one of my classes, so
that I can use List<blah>.Contains for a list of those objects instead
of writing a loop to compare with each item in the list.

When I add ": IEquatable" to my class definition, I get a compile
error:
"Using the generic type 'System.IEquatable<T>' requires '1' type
arguments."

What type am I supposed to specify? I just want to write a method that
compares two instances for equality, and the .NET 2.0 docs suggest I
should be using this rather than overriding Equals.

The class that you want to compare, i.e. the same class that you are
adding the interface to.

--
Göran Andersson
_____
http://www.guffa.com