visual c++ - why is overload with unsigned __int64 and __int64 ambiguous -

-


visual c++ - why is overload with unsigned __int64 and __int64 ambiguous -

using vs2008, why ok (not allowed utilize 2010).

void assert(int exp, int actual) {if (exp!=actual) printf("assert failed\n");} void assert(unsigned int exp, unsigned int actual) {if (exp!=actual) printf("assert failed\n");}

but ambiguous.

void assert(__int64 exp, __int64 actual) {if (exp!=actual) printf("assert failed\n");} void assert(unsigned __int64 exp, unsigned __int64 actual) {if (exp!=actual) printf("assert failed\n");}

sample error text

d:\my documents\visual studio 2008\projects\classtest\classtest\classtest.cpp(31) : error c2668: 'assert' : ambiguous phone call overloaded function d:\my documents\visual studio 2008\projects\classtest\classtest\classtest.cpp(12): 'void assert(unsigned __int64,unsigned __int64)' d:\my documents\visual studio 2008\projects\classtest\classtest\classtest.cpp(10): or 'void assert(__int64,__int64)' while trying match argument list '(int, int)'

it gets ambiguous regards 'unsigned' overload. having , "int" version , "__int64" version not ambiguous.

your code using int , int parameters. in first case has exact match. in sec case not, , treats int->uint64 , int->int64 as valid conversions doesn't know 1 pick.

visual-c++ overloading unsigned-long-long-int

Comments

Post a Comment

Popular posts from this blog

delphi - blogger via idHTTP : error 400 bad request -

-
delphi - blogger via idHTTP : error 400 bad request - i'm trying post blogger using idhttp component, however, i'm getting "http/1.0 400 bad request" error. procedure tform1.button1click(sender: tobject); var request,response,req : tstringlist; auth,blogid : string; begin blogid := '00000000000000000000000'; request := tstringlist.create; response := tstringlist.create; req := tstringlist.create; idhttp1.request.connection := 'keep-alive'; idhttp1.request.contenttype := 'application/x-www-form-urlencoded'; idssliohandlersocket1.ssloptions.method := sslvsslv23; request.clear(); request.values['accounttype'] := 'google'; request.values['email'] := 'xxx@gmail.com'; request.values['passwd'] := 'yyy'; request.values['service'] := 'blogger'; response.text :=idhttp1.post('https://www.google.com/accounts/clientlogin',request); auth := resp...
Read more

c++ - compiler errors when initializing EXPECT_CALL with function which has program_options::variables_map as parameter -

-
c++ - compiler errors when initializing EXPECT_CALL with function which has program_options::variables_map as parameter - i'm having problem expect_call method, when trying : boost::program_options::variables_map vm; mymock mock; expect_call(mock, mymethod(vm)).willonce(return(l"")); mymethod looks : std::wstring mymethod(const boost::program_options::variables_map &vm) when compiling got errors : error 17 error c2676: binary '==' : 'const boost::program_options::variable_value' not define operator or conversion type acceptable predefined operator c:\program files (x86)\microsoft visual studio 9.0\vc\include\utility error 10 error c2784: 'bool std::operator ==(const _elem *,const std::basic_string<_elem,_traits,_alloc> &)' : not deduce template argument 'const _elem *' 'const boost::program_options::variable_value' c:\program files (x86)\microsoft visual studio 9.0\vc\include\u...
Read more

How do I check if an insert was successful with MySQLdb in Python? -

-
How do I check if an insert was successful with MySQLdb in Python? - i have code: cursor = conn.cursor() cursor.execute(("insert new_files (videos_id, filename, " "is_processing) values (%s,%s,1)"), (id, filename)) logging.warn("%d", cursor.rowcount) if (cursor.rowcount == 1): logging.info("inserted values %d, %s", id, filename) else: logging.warn("failed insert values %d, %s", id, filename) cursor.close() fun is, cursor.rowcount always one, though updated database create videos_id unique key. is, insert fails because in tests same videos_id going appear (and when check database, nil inserted). whatever reason, rowcount 1 - logging.warn have spits out rowcount of 1. so, question: can utilize rowcount work out if insert went fine? if so, (presumably) doing wrong? otherwise, how check if insert went fine? your code not commit after modifications (your modifications rolled back). should...
Read more