Hi, I have a sample following code in which I am trying to test whether a certain object is extended from an abstract derived type. Here is the module: module my_module implicit none ! Abstract parent type type, abstract :: abstract_parent integer :: common_member end type abstract_p…

[image] nedanator: Here is the program: .. select type(obj2) type is(special_type) Try .. class is ( special_type )

Thank you, @alozada . I will check out the video when I get the chance this weekend. :slight_smile:

Thanks, @FortranFan . That does exactly what I need. :slight_smile: (A note mostly for my future self). This did not work immediately on my example. It works exactly how I want as long as the initial objects are set up as allocatable classes of the abstract type and then later initialised/allocated …

[image] nedanator: … (A note mostly for my future self). This did not work immediately on my example. It works exactly how I want as long as the initial objects are set up as allocatable classes of the abstract type and then later initialised/allocated with their respective derived types. @ne…

This manual page may also be useful: SELECT TYPE Statement: Marks the beginning of a SELECT TYPE construct. The construct selects for execution at most one of its constituent blocks. The selection is based on the dynamic type of a specified expression. I thi…

Hi @FortranFan . No, not really. I’ve been using and implementing object-oriented things in Fortran for about the past two months (and derived types for around 5 years) and, in that time, I have been reading documentation such as this website and other references like Intel’s webpages when I can find…

Thanks a lot @septc , that’s been pretty nifty to play with and see how things change accordingly when different blocks are commented out. :slightly_smiling_face:

[image] nedanator: … I’ve always had trouble with learning things from reading books, I find that I much more need to apply things to a project/task … @nedanator , The section on object-oriented programming and the preceding (and related) section on procedure pointers are only about 35 pages…

Thanks again for your thorough answer, @FortranFan . :slightly_smiling_face: Seems like I definitely need to get my hands on it to help with me developing my Fortran skills. Grounding myself in good practices and having a good understanding of the syntax would definitely help prevent me from falling …

[image] nedanator: … Grounding myself in good practices and having a good understanding of the syntax would definitely help prevent me from falling into bad habits or any pitfalls. … Toward this, you may want to look again at this site: Learn — Fortran Programming Language Fortra…

Type is(extended from abstract)

Help

alozada August 18, 2023, 11:16am 2

Perhaps this post might be useful.

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Type is(extended from abstract)

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