Johan Granberg wrote:
Denis Koroskin wrote:
On Sat, 28 Feb 2009 23:39:41 +0300, Andrei Alexandrescu
<[email protected]> wrote:
Nick Sabalausky wrote:
"dsimcha" <[email protected]> wrote in message
news:[email protected]...
== Quote from Jarrett Billingsley ([email protected])'s
article
Can we get this please? It's so simple and would be terribly useful.
Can someone explain what __FUNCTION__ would do in a little more
detail? I feel
like the two posts of this thread so far are talking in secret
__FUNCTION__-dealer
code.
void foofunc()
{
Stdout.formatln("{}", __FUNCTION__);
}
Output:
foofunc
Ie, basically the same as __FILE__ and __LINE__ and useful in the same
ways.
I think instead of __FUNCTION__ we'll define a much more comprehensive
static reflection facility.
Also, I'd like to be able to do something like:
Reflect.invoke(__FUNCTION__, params);
Yah... and Variant needs to have something similar as well. We know
quite what std.reflect needs to look like, just we want to keep our
fingers out of too many pies at once.
Something funtionally equiveilent to that would aid maitenance of
self-invoking functions (not only recusion, but also func overloads
that are defined in terms of one "primary" overload).
Also would be nice for similar reasons: __CLASS__ (or something
similar that would also work for structs)
Yah.
Andrei
Yes. When writing a recursive function, it is often desired to have a way
to call the function recursively via some shortcut, something like 'fthis'
(this function). It would be great to have something like this in D. That
way _FUNCTION__ could be replaced by 'fthis.stringof' or something
similar. It also gives small other advantages (easier code refactoring
etc). Here is an example:
int factorial(int c)
{
//writefln(fthis.stringof);
//writefln(typeof(fthis).stringof);
if (c < 2) return 1;
return fthis(c - 1) * c;
}
"fthis" does not sounds like a nice keyword. How about "self"?
We better use "..".
int factorial(int c)
{
//writefln(fthis.stringof);
//writefln(typeof(fthis).stringof);
if (c < 2) return 1;
return ..(c - 1) * c;
}
Andrei
