On Friday, 1 January 2021 at 01:43:50 UTC, Chris Bare wrote:
a1[10] = "testing a1";
this actually constructs a new thing since it is a straight x = y assignment.
a2[10].name = "testing a2";
But this looks up something first. It doesn't construct a2[10], it looks it up first to fetch the name member... hence the range violation since it isn't constructed yet.
a3[10] = new Project;
and this again will construct since it is a straight x = y again. So you could also do a2[10] = Person() then do the lookup of name