I am a physicist (neutron scattering) using fortran since 1977 for evaluating data and other modelling purpose etc.. I also created an instrument operation program system in C. After a long time sticking with fortran 77 and gradually a bit f90 a few years ago I had a closer look to the more modern variants and was amazed on the progress made. I think modern fortran is a superior choice for most numerical work in particular if it should lead quickly to reliable working results. Also I in partikular appreciate the nearly 100% backward compatibility, thus I can just patch 30 or more years old source code into a new fortran2008 program and just compile and run it (great!). So I appreciate exchange of experience with the new fortran features. I came to the page looking for a regexp implementation….