Does assignmentless Construction of an Object Make any Sense?

Question

A R# inspection of my solution told me "'Local variable 'fs' is never used'" about this line:

var fs = new FormatString();

Okay, then; just get rid of the whole shebang, right?

Instead, R#'s action was to remove just the var declaration and assignment, leaving:

new FormatString();

To my chaprise (chagrined surprise), it compiles!

But does it make any kind of sense?

Answer 1

Theoretically, yes. An object is constructed; the constructor executes. It might well do something "interesting" in the process.

Answer 2

If there are side effects in the constructor, then it's important for it to run. If it is side effect free, then you can remove the whole thing.

Answer 3

public FormatString()
{
    LaunchTheNukes();
}

in this case, yes it's doing 'something'.