在类构造函数中初始化QVector存在问题。这是我的头文件中的一行:
QVector<Person *> p;
这是构造函数中的一行:
this->p = new QVector<Person *>();
这是一个错误:
Error: no match for 'operator=' (operand types are 'QVector<Person*>' and 'QVector<Person*>*')
this->p = new QVector<Person *>()
我有C++代码,当我编译它时,我得到以下错误消息:
error: no matching function for call to ‘DataSourceScheme::initObject(const QString&, const QString&, QVector<ColumnScheme*>* const&)’
initObject(datasourcescheme.name_, datasourcescheme.cmd_, datasourcescheme.columns_);
note: no known conversion for
我在编写以下内容时遇到了困难:
#include <QVector>
#include <QDebug>
#include <vector>
class item
{
int var;
public:
//Without default constructor this program will not compile
//item(){}
item(int value)
{
var = value;
}
int getVar()
{
return var;
我想要建立一个设备的地图,使地图包含:
QString 'DeviceID‘和QVector’命令列表‘
目前,我有如下的QMap:
QMap<QString, QVector<QString> *> devices;
QVector<QString> *pCommands= new QVector<QString>;
// :
// Fill pCommands with lots of data here
// :
devices.insert(RadioID, pCommands);
但我想知道这是否比这更
在使用QThread in QT5和C++时,最大默认堆栈大小是多少?我的线程中有一个QVector,我正在调用myvector.append()方法,并且我使用m interested how big my vector can be. I founduint::stackSize()constmethod which returns Stack size, but only if it was previously changed by methodsetStackSize()‘,但是默认的堆栈大小是多少?
QVector<int> *l_iVec = new QVector<int>();
l_iVec->push_back(10);
l_iVec->push_back(20);
l_iVec->push_back(30);
l_iVec->push_back(40);
QDataStream dataStream;
dataStream<<l_iVec; //successfully build
dataStream>>l_iVec; //getting error on this line
error: in
大家好,一天中!不久前,我还能够并行递归算法来搜索组合某些事件的可能选项。目前,守则如下:
//#include's
// function announcements
// declaring a global variable:
QVector<QVector<QVector<float>>> variant; (or "std::vector")
int main() {
// reads data from file
// data are converted and analyzed
//