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问题描述
我有一个类的这段代码(这是一个代码段):
I've got this piece of code for a class (this is a snippet):
template<typename T>
class Pos2 {
public:
T x, y;
Pos2() : x(0), y(0) {};
Pos2(T xy) : x(xy), y(xy) {};
Pos2(T x, T y) : x(x), y(y) {};
};
现在,我还有2个typedef:
Now, I've also got 2 typedefs for it:
typedef Pos2<pos_scalar> Pos;
typedef Pos2<size_scalar> Size;
一切正常,但当我这样做:
Everything works as expected, but when I do this:
Pos p(5.5, 6.5);
Size s(3, 8);
p = s;
我收到此错误:
error: conversion from ‘Size {aka Pos2<short int>}’ to non-scalar type ‘Pos’ requested
这是有意义的,但我想知道如何解决它= P
It makes sense, but I'd like to know how to fix it =P
推荐答案
添加构造函数
template <typename Type2> Pos2(const Pos2<Type2> &other)
{ x = other.x; y = other.y; }
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