Comments on: 14.4 — Expression parameters and template specialization

By: jp

jp — Sat, 31 Jul 2010 06:42:36 +0000

for 5th code block

    // Store the name
    Storage strValue(strString);

    // Delete the temporary string
    delete strString;

shouldn’t it be delete[] since strString is dynamically allocated c style string..

By: C++ Tutorial and Online Ebook

C++ Tutorial and Online Ebook — Wed, 30 Jun 2010 01:01:23 +0000

[...] 14.4 Expression parameters and template specialization [...]

By: SUN

SUN — Sat, 19 Jun 2010 06:12:16 +0000

Hi Alex,

Thanks a lot for the tutorial.

The code below
26 for (int nCount=11; nCount >= 0; nCount–)

should be

26 for (nCount=11; nCount >= 0; nCount–)

To avoid error ncount’ : redefinition; multiple initialization during compilation.

Thanks
SUN

By: webbnh

webbnh — Fri, 05 Feb 2010 19:48:20 +0000

In your concluding sentence, I don’t think you want a tilde before the type name.

(Nevertheless, I, too, think this tutorial is great, and I refer to it constantly. Thanks!)

By: Cuacharpanas

Cuacharpanas — Fri, 29 Jan 2010 22:19:01 +0000

May be it is a compiler issue because if i don’t use template followed by the angled brackets before the line Storage::Print() then the compiler (Borland C++ 5.5.1 for Win32) tells: Explicit especialization of ‘void Storage::Print()’ requires ‘template’ declaration. Its stressing that some syntax have to depend on the compiler used.

By: MD AZAD ALI SHAH

MD AZAD ALI SHAH — Fri, 11 Dec 2009 08:25:05 +0000

Now, let’s say we want double values to output in scientific notation. To do so, we will need to use template specialization to create a specialized version of the Print() function for doubles. This is extremely simple: simply define the specialized function outside of the class definition, replacing the template type with the specific type you wish to redefine the function for. Here is our specialized Print() function for doubles:

1.void Storage::Print()
2.{
3.
std::cout << std::scientific << m_tValue << std::endl;
4.}

———————————–
Hi Alex,

Can it be :

  template<>
1.void Storage::Print()
2.{
3.
std::cout << std::scientific << m_tValue << std::endl;
4.}

By: MD AZAD ALI SHAH

MD AZAD ALI SHAH — Fri, 11 Dec 2009 08:19:17 +0000

Hi Alex,

Thanks a lot for the awsome tutorial. Its really wonderful.
Just a small doubt. You say above-

“Template classes (not template functions) can make use of another kind of template parameter known as an expression parameter.”

I think expression parameter can be used for Temple functions as well.
You also did same in 14.6 chapter in one of the example:-

1.template
2.void PrintBufferString(Buffer &rcBuf)
3.{
4.
std::cout << rcBuf.GetBuffer() << std::endl;
5.}

Warm Rgds,
Muhammad Azad Ali Shah

By: Specialising C++ Templates | Brenton Thomas

Specialising C++ Templates | Brenton Thomas — Tue, 06 Jan 2009 01:01:25 +0000

[...] and elements. A more readable description of how to do template specialisation can be found here. The quick summary is [...]

By: M.N. Jayaram

M.N. Jayaram — Thu, 18 Dec 2008 05:13:52 +0000

A small typo. In the class Buffer the first comment has ’side’ of array instead of ’size’.

Not nitpicking, just pointing!

[ Thanks for letting me know! -Alex ]

By: gswrg

gswrg — Mon, 10 Nov 2008 11:03:54 +0000

Hi Alex,

great tutorial. Thanks a lot.

First example in line 11 should read

 T& operator[](int nIndex)

instead of

 int& operator[](int nIndex)

[ Yes, thank you. -Alex ]