[Inkscape-devel] quick note on "using"

Hi,

Just a quick little note on the use of "using namespace" and such in .h files.

Please don't have "using" in .h files, since that ends up contaminating any .cpp files that include the .h. Also any that include .h's that in turn include .h's that do...

... but then we get into my personal preference to avoid #include inside of .h's when possible.