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By mswatcher
via ericlippert.com
Submitted: Jun 25 2013 / 05:49

It is, I hope, well-known that naïve string concatenation in a loop is a quadratic "Schlemiel" algorithm. (If you haven't read Joel's essay, stop reading this and go read it now.) Even though strings in .NET are length-prefixed as Joel discusses in his essay, it's still the case that naïve string concatenation is slow in C#. If you have:
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