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Would it be better for performance to use if statements over and over again, or to use them once and use delegates to call functions based on the output from the IF statements? I want to say that the answer is obviously delegates, but I’m not sure if going to different methods over and over is faster or slower than many IF statements that do the same thing. I hope I explained it right.
PS The framework I need to know this for is XNA, if it matters.
You have your trade offs. The best answer was commented already and that is to profile both and then figure it out. IF statements may take more CPU because it has to do the comparisons again and again. On the other hand using delegates takes more memory and it’s another object you need to keep around.
Personally what I’ve like doing the best (when applicable, don’t know the full context of your question) is turning your IF ELSE statements into a switch-case. This works really well for state machines and other repetitive processes plus you eliminate all that branching that comes with IFs. However, this is assuming that the values your are checking for are all relatively close in range or else you’ll be causing a lot of pain for the compiler.