Blog Post #0106: D-specific Stuff for GUI Programming II

[Ron Tarrant via Digitalmars-d-announce]

Today we pick apart a D-specific implementation of the Observer 
pattern in preparation for a GUI use-case we'll look at next 
time. You can find the article right here: 
https://gtkdcoding.com/2020/04/03/0106-dlang-ui-snippets-ii.html