n 04-Aug-12 18:16, Namespace wrote:
On Saturday, 4 August 2012 at 14:05:32 UTC, Dmitry Olshansky wrote:
On 04-Aug-12 17:57, Namespace wrote:
This code http://dpaste.dzfl.pl/6caed813 does only compile if i comment
out the "Clone" method. Why? o.O
Because it calls constructor and fails? I've done substitution for you:
this(const vec!(float,2) values) {
foreach (index, val; values) {
this.values[index] = cast(T) val;
}
}
No big wonder.
I'd try to fix Clone to:
{
vec!(T, dim) tmp = void;
tmp.values = this.values;
return tmp;
}
Then temp is empty/null and you cannot assign anything to it.
Furthermore temp would get a reference to the original array.
Doh. I somehow totally expected fixed size vector to be value type (struct).
And why it fails?
As i see, Clone calls this opCall method:
[code]
static vec!(T, dim) opCall(U, ubyte dim)(const vec!(U, dim) v) {
return vec!(T, dim)(v.values);
}
Then more simple thing is:
return vec!(T, dim)(v.values[]);
Note the [].
Static arrays are not convertible to dynamic implicitly.
Your use of ~= probably does append all of one static array elements in
one operation. To check it insert writeln in each iteration of your
foreach loops, you might be surprised.
--
Dmitry Olshansky
