I've been having to deal lately with conversion of large string arrays to number arrays and I'm wondering what the fastest method out there for this really is.

At first I adopted:

double[] doubles = sarray.Split(',').Select(Double.Parse).ToArray();

...which is really sweet... But today, I decided to switch back to a simple for loop to parse all strings in array to Double and not too surprisingly the benchmark seemed to favour the for loop.. so should I switch back to a basic for loop?

Also, I want to know if there's a better type that can be used to store the splitted strings e.g. HashSet which may perform better during this conversion?

c# .net linq
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