conversion from int to const string is ambiguous

An Internet Protocol address (IP address) is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. Autre fait divers, si je supprime la surcharge toString(const char*), il prend toString(bool) au lieu de toString(const string&) si on passe des chaînes littérales. The relevant bit is this line: QSAConnection() : sender(0), signal(0), function_ref() { } Since signal is a QString, the signal(0) bit is trying to call a constructor on the QString class that takes an integer as its only parameter.QString has no such constructor according to the Qt documentation. libc++'s iterator wrapper makes that conversion private; libstdc++ makes it public but explicit.. 平均評価 . In Win32, size_t is defined as unsigned int, unsigned int and size_t are all 4 bytes long. a variable or you pass it as parameter in a method invocation. It seems the type mechanisms are working against each other: it can't figure out which conversion to use because each conversion is equally valid, but a no-conversion overload can't be defined because it already has been. Any other built-in type. 1 string str = " hello "; 2 const char * p = str.data(); //加const 或者用char * p=(char*)str.data();的形式 同时有一点需要说明，这里在devc++ . operator >> ambiguous - social.msdn.microsoft.com The following conversions are widening conversions. C / C++ Forums on Bytes. Arduino framework giving error in WiFi library - PlatformIO error: conversion from 'double' to 'QChar' is ambiguous - Qt Forum error: conversion from 'uint64_t' {aka 'long unsigned int'} to 'const ... I'm on the latest versions, so not sure if this would have solved your problem at the time. The compiler still can't choose . Please check the function into IPAddress.cpp file of line 70 : bool IPAddress::fromString (const char *address) { // TODO: (IPv4) add support for "a", "a.b", "a.b.c" formats .. } I think you need to drop the parentheses from the IPAdress ip () in your code, The code should be like below :

Erik Bruhn Noureev, Articles C