Set variable in helper method and it changes in parent scope.

[mekb-turtle]

So I was wondering if it's possible to set a variable in a helper method for example:

public static void SetX(this Point a, int val) {
    a = new Point(val, a.Y);
    // Will `a` change in the place where this function is called from?
}

If this is not possible, can you recommend an alternative solution?

[Joe4evr]

Just mark the Point parameter to be passed by ref.

Side note: you should follow standard conventions and name your methods in PascalCase.

[marksmeltzer]

@Joe4evr

Dumb question: is that possible for extension methods? I've never tried on the assumption it isn't possible.

[PathogenDavid]

@marksmeltzer

Yup, it was added in C# 7.2, although only for structs.

Here's an example of it in action.

[mekb-turtle]

Just mark the Point parameter to be passed by ref.

Side note: you should follow standard conventions and name your methods in PascalCase.

I thought is was lowerCamelCase and UpperCamelCase.