Hello, I updated the Dataflow documentation with some examples showing how to create generic (in the sense that they can be used with a number of signal signatures) components for Dataflow.Signals with the help of some provided class templates. These class templates are applicator, conditional, instantiator, and modifier (there is also a conditional_modifier which is not documented, but it basically provides functionality of both conditional and modifier). The updated docs (with examples) are uploaded to: http://www.dancinghacker.com/code/dataflow/ You will find the mentioned class templates in the Components subsection of the Dataflow.Signals section. For example, the modifier documentation shows how to easily build a generic multiplier component, which will multiply each argument of the passing signal by a specified factor. The component could then be used as follows: { signals::storage<void (int, double)> result; multiplier<void (int, double)> multiply_by_3 (3); // result will store the result of the multiplication multiply_by_3 >>= result; multiply_by_3(1, 1.5); BOOST_ASSERT(result.at<0>() == 3); BOOST_ASSERT(result.at<1>() == 4.5); } { signals::storage<void (float, int, double)> result; multiplier<void (float, int, double)> multiply_by_half (0.5); // result will store the result of the multiplication multiply_by_half >>= result; multiply_by_half(1.0f, 9, 9.0); BOOST_ASSERT(result.at<0>() == 0.5f); BOOST_ASSERT(result.at<1>() == 4); BOOST_ASSERT(result.at<2>() == 4.5); } Note that without this facility, building such a generic multiplier would be somewhat involved (unless you are using variadic templates). Stjepan