9 ms·
http://forum.dlang.org/post/l37h5s$2gd8$1@digitalmars.com http://forum.dlang.org/post/l37h5s$2gd8$1@digitalmars.com Not sure of the full time line but they hir
by stonemetal 10y ago
http://forum.dlang.org/post/l37h5s$2gd8$1@digitalmars.com http://forum.dlang.org/post/l37h5s$2gd8$1@digitalmars.com
Not sure of the full time line but they hired Andrei Alexandrescu after he started working on D, and he was pretty open about using D at Facebook.