Are there any reasons not to use "this" ("Self", "Me", ...)?

Question

I read this answer and its comments and I'm curious: Are there any reasons for not using this / Self / Me ?

BTW: I'm sorry if this has been asked before, it seems that it is impossible to search for the word this on SO.

Answer 1

Warning: Purely subjective answer below.

I think the best "reason" for not using this/self/me is brevity. If it's already a member variable/function then why redundantly add the prefix?

Personally I avoid the use of this/self/me unless it's necessary to disambiguate a particular expression for the compiler. Many people disagree with this but I haven't ever had it be a real sticking point in any group I've worked for.

Answer 2

I think most of the common scenarios have been covered in the two posts already cited; mainly brevity and redundancy vs clarity - a minor addition: in C#, it is required to use "this" in order to access an "extension method" for the current type - i.e.

this.Foo();

where Foo() is declared externally as:

public static void Foo(this SomeType obj) {...}