• dan (16/16) May 17 2015 Is it possible to define a class F so that
• Namespace (2/19) May 17 2015 http://dlang.org/operatoroverloading.html#function-call
• Gary Willoughby (16/17) May 17 2015 Like this:
• dan (5/22) May 17 2015 Awesome!!
• =?UTF-8?B?QWxpIMOHZWhyZWxp?= (5/6) May 17 2015 There is the following short section as well:

"dan" <dan.hitt gmail.com> writes:

Is it possible to define a class F so that
     auto f=new F();
     writeln("The value of f at 7 is ",f(7));
compiles and works as expected?

So the idea would be to be able to use notation like
     f(7)
instead of
     f.eval(7)
or something along those lines.

My guess is no, it is impossible to do this, because i can't find 
it on the internet or in Alexandrescu's book.

But it is also possible that everybody considers it so obvious 
that they just don't elaborate on it.  I'd be delighted if there 
were the case, at least if somebody would elaborate on it if so.

TIA for any info!

dan

"Namespace" <rswhite4 gmail.com> writes:

On Sunday, 17 May 2015 at 18:49:40 UTC, dan wrote:
 Is it possible to define a class F so that
     auto f=new F();
     writeln("The value of f at 7 is ",f(7));
 compiles and works as expected?

 So the idea would be to be able to use notation like
     f(7)
 instead of
     f.eval(7)
 or something along those lines.

 My guess is no, it is impossible to do this, because i can't 
 find it on the internet or in Alexandrescu's book.

 But it is also possible that everybody considers it so obvious 
 that they just don't elaborate on it.  I'd be delighted if 
 there were the case, at least if somebody would elaborate on it 
 if so.

 TIA for any info!

 dan

http://dlang.org/operatoroverloading.html#function-call

"Gary Willoughby" <dev nomad.so> writes:

On Sunday, 17 May 2015 at 18:58:32 UTC, Namespace wrote:
 http://dlang.org/operatoroverloading.html#function-call

Like this:

module main;

import std.stdio;

class F
{
	int opCall(int value)
	{
		return value * 2;
	}
}

void main(string[] args)
{
	auto f = new F();

	writeln("The value of f at 7 is ", f(7));
}

"dan" <dan.hitt gmail.com> writes:

Awesome!!

Thanks Gary and namespace (and obviously i gotta improve my 
google-fu).

dan

On Sunday, 17 May 2015 at 19:40:10 UTC, Gary Willoughby wrote:
 On Sunday, 17 May 2015 at 18:58:32 UTC, Namespace wrote:
 http://dlang.org/operatoroverloading.html#function-call

 Like this:

 module main;

 import std.stdio;

 class F
 {
 	int opCall(int value)
 	{
 		return value * 2;
 	}
 }

 void main(string[] args)
 {
 	auto f = new F();

 	writeln("The value of f at 7 is ", f(7));
 }

=?UTF-8?B?QWxpIMOHZWhyZWxp?= <acehreli yahoo.com> writes:

On 05/17/2015 11:49 AM, dan wrote:
 i can't find it on the internet

There is the following short section as well:

 
http://ddili.org/ders/d.en/operator_overloading.html#ix_operator_overloading.opCall

Ali