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digitalmars.D - function overloading of address

reply "sdvcn" <sdvcn 126.com> writes:
void ac(int aa)
{
}

void ac(void *a2)
{
}

int main(string[] argv)
{
auto v = &ac;  //<--- who address
}


who get "void ac(int aa)" address ?
Dec 02 2014
parent reply "bearophile" <bearophileHUGS lycos.com> writes:
sdvcn:


 void ac(int aa)
 {
 }

 void ac(void *a2)
 {
 }

 int main(string[] argv)
 {
 auto v = &ac;  //<--- who address
 }


 who get "void ac(int aa)" address ?


This code:


void foo(int) {}
void foo(void*) {}

void main() {
     auto pfoo = &foo;
}


Gives:

test.d(5,17): Error: cannot infer type from overloaded function 
symbol & foo

Bye,
bearophile
Dec 02 2014
next sibling parent reply "H. S. Teoh via Digitalmars-d" <digitalmars-d puremagic.com> writes:
On Wed, Dec 03, 2014 at 02:11:54AM +0000, bearophile via Digitalmars-d wrote:

 sdvcn:
 

void ac(int aa)
{
}

void ac(void *a2)
{
}

int main(string[] argv)
{
auto v = &ac;  //<--- who address
}


who get "void ac(int aa)" address ?


 
 This code:
 
 
 void foo(int) {}
 void foo(void*) {}
 
 void main() {
     auto pfoo = &foo;
 }
 
 
 Gives:
 
 test.d(5,17): Error: cannot infer type from overloaded function symbol & foo


[...]

How do you take the address of specific overload, though?


T

-- 
Arise, you prisoners of Windows
Arise, you slaves of Redmond, Wash,
The day and hour soon are coming
When all the IT folks say "Gosh!"
It isn't from a clever lawsuit
That Windowsland will finally fall,
But thousands writing open source code
Like mice who nibble through a wall.
-- The Linux-nationale by Greg Baker
Dec 02 2014
parent "sdvcn" <sdvcn 126.com> writes:
On Wednesday, 3 December 2014 at 02:20:32 UTC, H. S. Teoh via 
Digitalmars-d wrote:

 On Wed, Dec 03, 2014 at 02:11:54AM +0000, bearophile via 
 Digitalmars-d wrote:

 sdvcn:
 

void ac(int aa)
{
}

void ac(void *a2)
{
}

int main(string[] argv)
{
auto v = &ac;  //<--- who address
}


who get "void ac(int aa)" address ?


 
 This code:
 
 
 void foo(int) {}
 void foo(void*) {}
 
 void main() {
     auto pfoo = &foo;
 }
 
 
 Gives:
 
 test.d(5,17): Error: cannot infer type from overloaded 
 function symbol & foo


 [...]

 How do you take the address of specific overload, though?


 T


how take (void foo(int)) address?
Dec 02 2014
prev sibling next sibling parent reply ketmar via Digitalmars-d <digitalmars-d puremagic.com> writes:
On Tue, 2 Dec 2014 18:18:26 -0800
"H. S. Teoh via Digitalmars-d" <digitalmars-d puremagic.com> wrote:


 On Wed, Dec 03, 2014 at 02:11:54AM +0000, bearophile via Digitalmars-d wr=


ote:

 sdvcn:
=20

void ac(int aa)
{
}

void ac(void *a2)
{
}

int main(string[] argv)
{
auto v =3D &ac;  //<--- who address
}


who get "void ac(int aa)" address ?


=20
 This code:
=20
=20
 void foo(int) {}
 void foo(void*) {}
=20
 void main() {
     auto pfoo =3D &foo;
 }
=20
=20
 Gives:
=20
 test.d(5,17): Error: cannot infer type from overloaded function symbol =




& foo

 [...]
=20
 How do you take the address of specific overload, though?


declare the necessary function type instead of auto:

  void function (int) pfoo =3D &foo;
Dec 02 2014
parent "sdvcn" <sdvcn 126.com> writes:
On Wednesday, 3 December 2014 at 02:31:20 UTC, ketmar via 
Digitalmars-d wrote:

 On Tue, 2 Dec 2014 18:18:26 -0800
 "H. S. Teoh via Digitalmars-d" <digitalmars-d puremagic.com> 
 wrote:


 On Wed, Dec 03, 2014 at 02:11:54AM +0000, bearophile via 
 Digitalmars-d wrote:

 sdvcn:
 

void ac(int aa)
{
}

void ac(void *a2)
{
}

int main(string[] argv)
{
auto v = &ac;  //<--- who address
}


who get "void ac(int aa)" address ?


 
 This code:
 
 
 void foo(int) {}
 void foo(void*) {}
 
 void main() {
     auto pfoo = &foo;
 }
 
 
 Gives:
 
 test.d(5,17): Error: cannot infer type from overloaded 
 function symbol & foo


 [...]
 
 How do you take the address of specific overload, though?


 declare the necessary function type instead of auto:

   void function (int) pfoo = &foo;


Thank you.
Dec 02 2014
prev sibling next sibling parent "H. S. Teoh via Digitalmars-d" <digitalmars-d puremagic.com> writes:
On Wed, Dec 03, 2014 at 04:31:11AM +0200, ketmar via Digitalmars-d wrote:

 On Tue, 2 Dec 2014 18:18:26 -0800
 "H. S. Teoh via Digitalmars-d" <digitalmars-d puremagic.com> wrote:


[...]

 How do you take the address of specific overload, though?


 declare the necessary function type instead of auto:
 
   void function (int) pfoo = &foo;


Ah, of course. I'm getting too used to type inference. :-P


T

-- 
If you look at a thing nine hundred and ninety-nine times, you are perfectly
safe; if you look at it the thousandth time, you are in frightful danger of
seeing it for the first time. -- G. K. Chesterton
Dec 02 2014
prev sibling parent ketmar via Digitalmars-d <digitalmars-d puremagic.com> writes:
On Tue, 2 Dec 2014 18:40:45 -0800
"H. S. Teoh via Digitalmars-d" <digitalmars-d puremagic.com> wrote:


 On Wed, Dec 03, 2014 at 04:31:11AM +0200, ketmar via Digitalmars-d wrote:

 On Tue, 2 Dec 2014 18:18:26 -0800
 "H. S. Teoh via Digitalmars-d" <digitalmars-d puremagic.com> wrote:


 [...]

 How do you take the address of specific overload, though?


 declare the necessary function type instead of auto:
=20
   void function (int) pfoo =3D &foo;


=20
 Ah, of course. I'm getting too used to type inference. :-P


me too. the first thing i tried was `&foo(0)` to hint the type.
Dec 02 2014