On Monday, 18 June 2012 at 16:51:11 UTC, Andrej Mitrovic wrote:
struct Wrap
{
string wrap;
alias wrap this;
}
void main()
{
Wrap x;
x = "foo"; // ok
Wrap[] y = ["foo", "bar"]; // fail
}
Error: cannot implicitly convert expression (["foo","bar"]) of
type
string[] to Wrap[]
Any special reason why this doesn't work? I hope it's just a
bug or
unfinished implementation.
This kind conversions should be possible with std.conv.to.
import std.conv;
struct Wrap
{
string wrap;
alias wrap this;
}
void main()
{
Wrap[] y = to!(Wrap[])(["foo", "bar"]); // shold work
}
If you can construct Wrap object with the syntax Wrap("foo"),
std.conv.to runs 'conversion by construction'.
And if S is convertible to T, std.conv.to!(T[])(S[] source) runs
'element-wise array conversion'.
As a result, string[] to Wrap[] will be converted.
...but, this does not work in 2.060head, it is a bug.
Kenji Hara
