Assuming this != null when implementing IComparable

Question

I have an object of type T which implements IComparable<T>. Is it okay when implementing bool Equals (T obj) to ommit the check if (ReferenceEquals(this, null)) { DoSomething() }? Can I assume that since the function could be called this is already not null?

Thank you very much.

@helium: That is not always true... http://stackoverflow.com/a/3143558/347172 — myermian, Jul 31 '13 at 20:42

score 3 · Answer 1 · answered Mar 09 '11 at 10:58

3

Yes you can assume that if the function has been called on an object, then that object is not null.

answered Mar 09 '11 at 10:58

Nick

25,026
7
51
83

score 3 · Answer 2 · answered Mar 09 '11 at 11:01

3

You should always assume this != null, because C# guarantees it.

answered Mar 09 '11 at 11:01

Gabe

84,912
12
139
238

Assuming this != null when implementing IComparable

2 Answers2