On Tuesday, 16 September 2014 at 16:27:46 UTC, H. S. Teoh via
Digitalmars-d-learn wrote:
On Tue, Sep 16, 2014 at 04:19:10PM +0000, via
Digitalmars-d-learn wrote:
The following code does not compile, because the custom
predicate of
std.algorithm.sort is a template parameter, and therefore can
only be
a function, but not a delegate.
What makes you think so? Template parameters certainly can be
delegates.
I use that all the time.
Well because the delegate contains a pointer to the object, which
can not be known at compile time. In fact
sort!(&f.cmp)(data);
fails with the error "variable f cannot be read at compile time",
which seems reasonable to me. On the other hand
sort!((a,b) => f.cmp(a, b))(data);
does in fact compile, so i guess problem is solved. Thanks guys.
