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Groups > comp.lang.c++ > #83572

ambiguous reference to 'find' in std and std::ranges namespaces

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Hi,

why do I get the error (with gcc-Version 11.2.1):


find_test.cc: In function ‘int main()’:
find_test.cc:10:41: error: reference to ‘find’ is ambiguous
   10 |     std::vector<int>::const_iterator it=find(v,47);
      |                                         ^~~~

when compiling the following code:

#include <algorithm>
#include <ranges>
#include <vector>

using namespace std;         // *
using namespace std::ranges; // **

int main() {
    const std::vector<int> v({47,11});
    std::vector<int>::const_iterator it=find(v,47);
}

AFAICT there is no way that std::find could be a candidate whereas
std::ranges::find matches. This can also be seen by the fact that
commenting out the line marked * results in successful compilation but
commenting out ** instead leaves me with the error of no matching
function. 

PS: Please don't bother to comment the "using namespace" directives,
these are not the point and I know they are frowned upon.

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ambiguous reference to 'find' in std and std::ranges namespaces Ralf Goertz <me@myprovider.invalid> - 2022-04-13 09:58 +0200
  Re: ambiguous reference to 'find' in std and std::ranges namespaces Paavo Helde <eesnimi@osa.pri.ee> - 2022-04-13 14:27 +0300
    Re: ambiguous reference to 'find' in std and std::ranges namespaces Bo Persson <bo@bo-persson.se> - 2022-04-13 14:21 +0200
      Re: ambiguous reference to 'find' in std and std::ranges namespaces Paavo Helde <eesnimi@osa.pri.ee> - 2022-04-13 15:31 +0300
    Re: ambiguous reference to 'find' in std and std::ranges namespaces Juha Nieminen <nospam@thanks.invalid> - 2022-04-13 13:26 +0000
      Re: ambiguous reference to 'find' in std and std::ranges namespaces Juha Nieminen <nospam@thanks.invalid> - 2022-04-13 13:28 +0000
        Re: ambiguous reference to 'find' in std and std::ranges namespaces Paavo Helde <eesnimi@osa.pri.ee> - 2022-04-13 17:26 +0300
        Re: ambiguous reference to 'find' in std and std::ranges namespaces Christian Gollwitzer <auriocus@gmx.de> - 2022-04-14 07:13 +0200
          Re: ambiguous reference to 'find' in std and std::ranges namespaces Ralf Goertz <me@myprovider.invalid> - 2022-04-14 08:57 +0200
            Re: ambiguous reference to 'find' in std and std::ranges namespaces Bo Persson <bo@bo-persson.se> - 2022-04-14 13:23 +0200
              Re: ambiguous reference to 'find' in std and std::ranges namespaces Paavo Helde <eesnimi@osa.pri.ee> - 2022-04-14 16:32 +0300
                Re: ambiguous reference to 'find' in std and std::ranges namespaces Bo Persson <bo@bo-persson.se> - 2022-04-14 18:30 +0200
              Re: ambiguous reference to 'find' in std and std::ranges namespaces Ralf Goertz <me@myprovider.invalid> - 2022-04-15 10:14 +0200
            Re: ambiguous reference to 'find' in std and std::ranges namespaces Manfred <noname@add.invalid> - 2022-04-14 15:02 +0200
  Re: ambiguous reference to 'find' in std and std::ranges namespaces Christian Hanné <the.hanne@gmail.com> - 2022-04-15 14:39 +0200

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