[Issue 8264] New: [std.conv.to] constructing conversion doesn't work with alias this
d-bugmail at puremagic.com
d-bugmail at puremagic.com
Mon Jun 18 22:26:05 PDT 2012
http://d.puremagic.com/issues/show_bug.cgi?id=8264
Summary: [std.conv.to] constructing conversion doesn't work
with alias this
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Keywords: rejects-valid
Severity: normal
Priority: P2
Component: Phobos
AssignedTo: nobody at puremagic.com
ReportedBy: k.hara.pg at gmail.com
--- Comment #0 from Kenji Hara <k.hara.pg at gmail.com> 2012-06-18 22:28:24 PDT ---
from
http://forum.dlang.org/thread/mailman.1606.1340038410.24740.digitalmars-d-learn@puremagic.com#post-cetlbrtfhbtunchppikq:40forum.dlang.org
----
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.
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