My solutions to the exercises in "The Boost C++ Libraries"

I like books with excercises, but I also want solutions to see if I got it right. When working through The Boost C++ Libraries I only found solutions that I had to pay for, so here are my own solutions if you want to compare to yours. Please let me know if you thing I got it wrong or if you have a better solution.I like books with excercises, but I also want s