On Mar 16, 2021, at 11:17 PM, Barry Smith <bsm...@petsc.dev<mailto:bsm...@petsc.dev>> wrote:
So it actually does not load everything at the call to use but waits until the subroutine definitions and then only loads what you ask to import? Sorry, this is odd, with C include or python import it immediately loads up everything as soon as it sees the include or import, there is no way later to say "wo hoarsy I didn't really mean you should get everything I asked, for please only load up a subset". But then Fortran was always weird, when I saw presentations of the Fortran standards committee members I always felt like they read every third page of some computer science book but never realized they missed many of the pages. Which proves that they know their target audience ;) >From the standpoint of somebody who also read every third page of a computer >science book, fortran modules sounded like a good idea on the paper (I >basically think of them as auto-generated header files), but they are >miserable in practice, and in particular a major block to cross compiler >compatibility since the format of .mod file was left to the discretion of the >compiler writers. Blaise -- A.K. & Shirley Barton Professor of Mathematics Adjunct Professor of Mechanical Engineering Adjunct of the Center for Computation & Technology Louisiana State University, Lockett Hall Room 344, Baton Rouge, LA 70803, USA Tel. +1 (225) 578 1612, Fax +1 (225) 578 4276 Web http://www.math.lsu.edu/~bourdin
