PyF95++

[ivan-pi]

Some relevant prior art, please ignore this issue in case the works are already known to you,

• Car, D., & List, M. (2010, April). PyF95++ a templating capability for the Fortran 95/2003 language. In ACM SIGPLAN Fortran Forum (Vol. 29, No. 1, pp. 2-20). New York, NY, USA: ACM. https://doi.org/10.1145/1753166.1753167
• List, M., & Car, D. (2011, March). A fortran unit-testing framework utilizing templating and the PyF95++ toolset. In ACM SIGPLAN Fortran Forum (Vol. 30, No. 1, pp. 3-15). New York, NY, USA: ACM. https://doi.org/10.1145/1961363.1961364

This language extension resembles some of newly proposed generic syntax quite closely, for instance

call foo<integer, real, real>(x, y, z)
call foo<integer, real, integer>(x, y, z)
call foo<integer, integer, integer>(x, y, z)
call foo<real, real, real>(x, y, z)

for specializing the argument types.