Pascal had a forward declaration from way back, even before Object Pascal: https://en.m.wikipedia.org/wiki/Forward_declaration https://en.m.wikipedia.org/wiki/

Pascal had a forward declaration from way back, even before Object Pascal: https://en.m.wikipedia.org/wiki/Forward_declaration https://en.m.wikipedia.org/wiki/Forward_declaration https://en.m.wikipedia.org/wiki/Pascal_(programming_language) https://en.m.wikipedia.org/wiki/Pascal_(programming_language... https://en.m.wikipedia.org/wiki/Object_Pascal https://en.m.wikipedia.org/wiki/Object_Pascal https://www.thedelphigeek.com/2017/03/forward-record-declaration.html?m=1 https://www.thedelphigeek.com/2017/03/forward-record-declara...