On Saturday, 27 July 2019 at 17:13:45 UTC, Adam D. Ruppe wrote:
If you change that to just plain `return NodeList(a, b);`,
while keeping the first line, it will compile too.
The reason here is when you return and construct together, it
constructs it in-place. But if you put it in a local variable
first, it needs to copy it to the return value.
Removing the first line just lets the compiler optimize out the
local variable, reducing it to the in-place one again.
But explicitly returning and constructing together works in
either case.
Thanks your for the very quick and good explain.
I thinks the DMD should report a more helpful error about this.
