[swift-dev] Very slow Set<String>(arrayOfStrings) for some arrayOfStrings

[Jens Persson]

For some particular arrays of strings, creating a
Set<String>(arrayOfStrings) takes about 100 to 200 times longer than for
other very similar arrays of strings (equally many unique simple [a-zA-Z ]+
strings).

I've put together a tiny program to demonstrate the problem here:
http://sloppyfocus.com/slowSetFromParticularButSeeminglyNormalArrayOfStrings.html

Is this due to a bug / performance problem in Set or can it be explained
(and solved) in some way?

/Jens
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