In C# it's better define object's attribute in its initialization or with dot notation?

Question

What is more efficent between this:

MyClass foo = new MyClass()
{
    name = "foo",
    color = "blue",
    number = 3
};

and this:

MyClass foo = new MyClass();
foo.name = "foo";
foo.color = "blue";
foo.number = 3;

_What is more efficent_ Why do you think they have different efficiency? They produce same IL code, that's why I don't think there are an _efficent_ issue. — Soner Gönül, Feb 26 '14 at 13:01
What you mean by the word "Effective"? faster? compiler compiles the both to the same IL, so no difference — Arsen Mkrtchyan, Feb 26 '14 at 13:02
@SonerGönül - you might be interested [in this](http://stackoverflow.com/q/1679780/314291) - see Eric and Luke's answers. — StuartLC, Feb 26 '14 at 14:12

score 1 · Accepted Answer · edited May 23 '17 at 11:43

1

Difference between first and second is, that the second way won't create a temporary object (as explained here: CA2000 - "out-of-school-junior-programmers"-mistakes or false positive?) - so no problems, warning or errors when it comes to disposing My Class.

edited May 23 '17 at 11:43

Community

answered Feb 26 '14 at 13:03

Matthias R.

Thanks - this leads to http://stackoverflow.com/a/1679841/314291 - interesting. – StuartLC Feb 26 '14 at 13:10
yeah, indeed haha, had this (plus its resulting CA2000) problem a few weeks ago and could not explain why this might happen - now i know. hope this solved this question and your problem :) – Matthias R. Feb 26 '14 at 13:14
1

Also, this means the linked duplicate is actually wrong, even in release mode. There seems to be an extra assignment with the initializer, to keep the observable state of `foo` consistent. – StuartLC Feb 26 '14 at 13:16

1 Answers1