This error may be fixed if you supply a conversion operator to make the required cast.

如果您提供转换运算子，进行所需的转换，就能修正这项错误。

youdao

This error may be fixed if you supply a conversion operator to make the required cast.

如果您提供转换运算子，进行所需的转换，就能修正这项错误。

youdao