ternary operator imbrication

Question

I am wondering: what is the best instruction in terms of performance between those 2 versions:

Background = Application.Current.Resources[condition ? BackgroundName1 : BackgroundName2] as Brush;

and:

Background = condition ? Application.Current.Resources[BackgroundName1] as Brush : Application.Current.Resources[BackgroundName2] as Brush;

is there any difference? and if yes, wich one is better?

thanks

NB: BackgroundName1 & 2 are simply strings

Answer 1

The first one is shorter and more readable.

It's also easier to maintain.
If you later change it to read a different Resources dictionary, you might forget to change the second half of the second one.

The first one is also more clearly reading from the same dictionary.

Answer 2

First: Use a profiler to find the slowest thing. If you're having a performance problem it doesn't make sense to spend hours or days working on making something faster that is already fast enough.

Second: You can determine the answer to your question by trying it both ways and carefully measuring to see if there is a difference. Don't ask us which is faster; we don't know because we haven't tried it and have no ability to try it.

Answer 3

Don't get too caught up in micro-optimizations! The performance gain you'll get will be nil. Go for the code that is more readable and easier to understand in the end.

Answer 4

No difference whatsoever.