Philippe Sigaud:
Keep in mind all these structures (AA and dynamic arrays) are
reference types.
There are bug-prone things you have to keep in mind.
Not exactly a reference type, this is by D specs:
import std.stdio;
import std.array: popFront;
void main() {
auto d = [1:[2, 3]];
auto l = d[1];
auto l2 = l[0];
l.popFront();
writeln(d, " ", l, " ", l2);
}
Even AAs (I don't know if this is an implementation bug or if
this is by D specs, opinions welcome):
void test(int[int] arraya, int x) {
arraya[x] = x;
}
void main() {
int[int] d;
test(d, 0);
int[int] d0;
assert(d == d0); // d is empty, 0:0 is lost
d[1] = 1;
test(d, 2);
assert(d == [1: 1, 2: 2]); // now 2:2 is not lost
}
Bye,
bearophile
