On Tuesday, 25 June 2024 at 21:13:44 UTC, Nick Treleaven wrote:
On Tuesday, 25 June 2024 at 02:16:25 UTC, mw wrote:
Why `foo.x.saa.aa` and `foo.y.saa.aa` is the same? (and of
course print out the same contents).
`shared_AA.saa` should still be instance variable, not class
variable, right?
`saa` is an instance variable, but both `foo.x.saa` and
`foo.y.saa` are initialized to the same instance of
`shared_AA_class`. I think in the next edition of D we can
forbid tail mutable initializers.
I think the main problem here is that most people come to D from
Java / C++ world (among the most popular languages). This tail
initializer's syntax looks the same, but the semantics is so
different and so surprisingly unexpected! (as I demo-ed in my
previous reply).
At least, we need to have a document for Java / C++ programmers,
which clearly highlights such important differences.
