Type conversion ambiguity.

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  • shuisheng
    #1

    Type conversion ambiguity.

    Dear All,

    Such as I have a template class Base<intwhich can automaticaaly
    convert to base<douoble>.

    Base<int <= Base<double>

    And also I have a derived class Derived<intwhic h can automatically
    convert to Derived<double> .

    Derived<int<= Derived<double>

    And I have a function

    void fun(Base<int>)

    If I call

    Derived <doublea;
    fun(a);

    It is ambiguous in the type conversion. Is there any good way I can
    avoid it?

    Thanks,

    Tian

    Tags: None
    • Victor Bazarov
      #2
      Re: Type conversion ambiguity.

      shuisheng wrote:
      Such as I have a template class Base<intwhich can automaticaaly
      convert to base<douoble>.
      >
      Base<int <= Base<double>
      >
      And also I have a derived class Derived<intwhic h can automatically
      convert to Derived<double> .
      >
      Derived<int<= Derived<double>
      You probably forgot to mention that 'Derived<X>' is actually derived
      from 'Base<X>'.
      And I have a function
      >
      void fun(Base<int>)
      >
      If I call
      >
      Derived <doublea;
      fun(a);
      >
      It is ambiguous in the type conversion. Is there any good way I can
      avoid it?
      What do you mean by "to avoid"? Which one do you actually need? Or
      do you want an error message instead?

      V
      --
      Please remove capital 'A's when replying by e-mail
      I do not respond to top-posted replies, please don't ask


        Comment

        • shuisheng
          #3
          Re: Type conversion ambiguity.


          Victor Bazarov 写道：
          What do you mean by "to avoid"? Which one do you actually need? Or
          do you want an error message instead?
          >
          Got your message, Thanks.
          --
          Please remove capital 'A's when replying by e-mail
          I do not respond to top-posted replies, please don't ask
          I am wondering what is capital 'A's?

            Comment

            • Victor Bazarov
              #4
              Re: Type conversion ambiguity.

              shuisheng wrote:
              Victor Bazarov ??:
              >
              >What do you mean by "to avoid"? Which one do you actually need? Or
              >do you want an error message instead?
              >>
              >
              Got your message, Thanks.
              You're welcome. Glad I could help.
              >Please remove capital 'A's when replying by e-mail
              >I do not respond to top-posted replies, please don't ask
              >
              I am wondering what is capital 'A's?
              Those are letters 'A' (compared to letters 'a', which are called "small",
              if memory serves me).

              V
              --
              Please remove capital 'A's when replying by e-mail
              I do not respond to top-posted replies, please don't ask


                Comment

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