I see a structure on boost.DI that I haven"t seen before. What does the method in this structure mean?
struct width {
int value;
constexpr operator int() const { return value; }
};
struct height {
int value;
constexpr operator int() const { return value; }
};
class button {
public:
button(width, height); // strong constructor interface
};
button{width{10}, height{15}};
Type conversion
reference link
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