C++ 错误：“operator=”不匹配
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C++ Error: No match for 'operator='
提问by CHawk
Having a problem when assigning a value to an array. I have a class I created called Treasury. I created another class called TradingBookwhich I want to contain a global array of Treasurythat can be accessed from all methods in TradingBook. Here is my header files for TradingBook and Treasury:
为数组赋值时出现问题。我创建了一个名为Treasury. 我创建了另一个名为的类TradingBook，我想包含一个全局数组，Treasury该数组可以从TradingBook. 这是我的 TradingBook 和 Treasury 的头文件：
class Treasury{
public:
Treasury(SBB_instrument_fields bond);
Treasury();
double yieldRate;
short periods;
};
class TradingBook
{
public:
TradingBook(const char* yieldCurvePath, const char* bondPath);
double getBenchmarkYield(short bPeriods) const;
void quickSort(int arr[], int left, int right, double index[]);
BaseBond** tradingBook;
int treasuryCount;
Treasury* yieldCurve;
int bondCount;
void runAnalytics(int i);
};
And here is my main code where I'm getting the error:
这是我收到错误的主要代码：
TradingBook::TradingBook(const char* yieldCurvePath, const char* bondPath)
{
//Loading Yield Curve
// ...
yieldCurve = new Treasury[treasuryCount];
int periods[treasuryCount];
double yields[treasuryCount];
for (int i=0; i < treasuryCount; i++)
{
yieldCurve[i] = new Treasury(treasuries[i]);
//^^^^^^^^^^^^^^^^LINE WITH ERROR^^^^^^^^^^^^^^
}
}
I am getting the error:
我收到错误：
No match for
'operator='on the line'yieldCurve[i] = new Treasury(treasuries[i]);'
不匹配
'operator='就行'yieldCurve[i] = new Treasury(treasuries[i]);'
Any advice?
有什么建议吗？
回答by Mysticial
That's because yieldCurve[i]is of type Treasury, and new Treasury(treasuries[i]);is a pointer to a Treasuryobject. So you have a type mismatch.
那是因为yieldCurve[i]is 的类型Treasury，并且new Treasury(treasuries[i]);是指向Treasury对象的指针。所以你有一个类型不匹配。
Try changing this line:
尝试更改此行：
yieldCurve[i] = new Treasury(treasuries[i]);
to this:
对此：
yieldCurve[i] = Treasury(treasuries[i]);
回答by K-ballo
Treasury* yieldCurve;
yieldCurveis a pointer to an array of Treasury, not Treasury*. Drop the newat the line with error, or modify the declaration for it to be an array of pointers.
yieldCurve是一个指向 的数组的指针Treasury，而不是Treasury*。删除new有错误的行，或将声明修改为指针数组。
