const and Templates

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2 total messages Started by Jose Manuel Tovar Tue, 01 Mar 2005 12:22

#41

Author: Jose Manuel Tovar
Date: Tue, 01 Mar 2005 12:22

43 lines
1971 bytes

Hello,

I have a problem using templates and const.

I want to be sure that in _coefs function, h can not be changed. So I use
const but the result is that I can not use a pointer to double to pass the
array of doubles.

Any idea?

P.D: If you delete the const the code compiles ok.

Thank you in advance.

Jose Manuel Tovar

[C++ Error] Unit1.cpp(39): E2034 Cannot convert 'double *' to 'double[7]'
[C++ Error] Unit1.cpp(39): E2342 Type mismatch in parameter 'h' (wanted
'double ( &) const[7]', got 'double *')


template <class VCTH>
void _coefs (const VCTH& h)
{
}
//---------------------------------------------------------------------------

template <class VCTH>
void _trazador (VCTH& h)
{
  h[0] = 2;
  _coefs (h);
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
  double h[7];

  h[0] = 1;
  _trazador (h);
}
//---------------------------------------------------------------------------

Re: const and Templates

#42

Author: Thomas Maeder [TeamB]
Date: Tue, 01 Mar 2005 17:26

5 lines
1343 bytes

Please direct your browser at http://info.borland.com/newsgroups/ and read the
newsgroup guidelines. One of them asks us not to post the same question to
different newsgroups, but to pick the most appropriate one and just post
there. Thanks!

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