On Friday, March 29, 2013 4:16:31 PM UTC+1, Magnus wrote:
>
> Hi,
>
> after upgrading the eclipse plugin I found a folder named "gwt-unitCache" 
> under my project directory. I think it was not there before.
> Does anyone know what it is for?
>

It's used by the compiler to cache "compilation units", which are 
(basically) the things it creates upon parsing your Java source files. The 
gwt-unitCache will speed-up subsequent compiles because it can just read 
from the cache rather than re-parse/compile a file if it hasn't changed.
I believe it's also used by devmode (can't remember).

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