dev-cpp-users

RE: [Dev-C++] Scope in Template

[Ioannis V. <iv...@in...>]

-----------------------Original Message-----------------------
>From:  Robson Bernard [mailto:rob...@su...]
>To:  C++ Mail List [mailto:dev...@li...]
>Date:  11/3/2003 3:03:00 =F0=EC
>Subject:  [Dev-C++] Scope in Template
>
>Hello all c++ coders!
>
>I am working on a substitute for the vector template - <ctable> - due to
>some extra kbytes that <vector> increases in the exe file.=20


vector is optimized in space/time for regular use. Yours will be less
flexible and less efficient.

There are other containers too you know, including valarray.



> In the 'push'
>member function of my class template, named 'Table', i get the following
>error for line 20 when compiling:
>
>    20  'T' was not declared in this scope
>    20  template argument 1 is invalid
>    20  'T' was not declared in this scope
>    20  parse error before ')'
>
>Please HELP ME!!!
>
>the class:
>
>
>
>template <class T>
>class Table
>{
>    T *ptrToArray;
>    long tableSize;
>
>    public:
>        Table(int numberOfElements);
>        Table(const Table & a);
>        ~Table();
>        T& operator=3D (const Table & a);
>        T& operator[] (long index) {return ptrToArray[index];};
>        long size() {return tableSize;};
>        void erase(long index);
>        void push(T& newObject);
>};


template<class T>

>void Table<T>::push(T& newObject)
>{
>    T *temp =3D new T[tableSize + 1];
>
>    for(long loopIndex =3D 0; loopIndex < tableSize; loopIndex++)
>        temp[loopIndex] =3D ptrToArray[loopIndex];
>
>    tableSize++;
>
>    temp[tableSize - 1] =3D newObject;
>
>    delete[] ptrToArray;
>
>    T *ptrToArray =3D new T[tableSize];
>
>    for(long loopIndex =3D 0; loopIndex < tableSize; loopIndex++)
>        ptrToArray[loopIndex] =3D temp[loopIndex];
>
>    delete[] temp;
>}
>
>
>
>template <class T>
>void Table<T>::erase(long index)
>{
>    for(long loopIndex =3D index; loopIndex < tableSize - 1; loopIndex++=
)
>        ptrToArray[loopIndex] =3D ptrToArray[loopIndex + 1];
>
>    delete &ptrToArray[tableSize - 1];
>    tableSize--;
>}
>
>
>
>template <class T>
>Table<T>::Table(int numberOfElements)
>{
>    tableSize =3D numberOfElements;
>    ptrToArray =3D new T[tableSize];
>}
>
>
>
>template <class T>
>Table<T>::Table(const Table & a)
>{
>    tableSize =3D a.tableSize;
>    T *ptrToArray =3D new T[tableSize];
>
>    for(long loopIndex =3D 0; loopIndex < tableSize; loopIndex++)
>        ptrToArray[loopIndex] =3D a.ptrToArray[loopIndex];
>}
>
>
>
>template <class T>
>T& Table<T>::operator=3D (const Table & a)
>{
>    if(this =3D=3D &a) return *this;
>    delete[] ptrToArray;
>
>    tableSize =3D a.tableSize;
>    T *ptrToArray =3D new T[tableSize];
>
>    for(long loopIndex =3D 0; loopIndex < tableSize; loopIndex++)
>        ptrToArray[loopIndex] =3D a.ptrToArray[loopIndex];
>
>    return *this;
>}
>
>
>
>template <class T>
>Table<T>::~Table()
>{
>    delete[] ptrToArray;
>}



Ioannis Vranos=20

* Programming pages: http://www.noicys.freeurl.com
* Alternative URL: http://run.to/noicys=20

RE: [Dev-C++] Scope in Template

[Ioannis V. <iv...@in...>]

-----------------------Original Message-----------------------
>From:  Robson Bernard [mailto:rob...@su...]
>To:  Ioannis Vranos [mailto:iv...@in...]; C++ Mail List
[mailto:dev...@li...]
>Date:  11/3/2003 5:56:00 =F0=EC
>Subject:  Re: [Dev-C++] Scope in Template
>
>
>>>vector is optimized in space/time for regular use. Yours will be less
>>>flexible and less efficient.
>
>
>>>There are other containers too you know, including valarray.
>
>
>Maybe, Ioannis. But i'm projecting the ctable to take care specifically =
of
>my game project, since i will not use some of the vector features. the
>vector header file increases my finex (final exe) ;-)  about 15kb and it=
 is
>not desireable for a 150kb game. Maybe some people find it usefull when =
i
>finish it. If you have some sugestion about what to do or not to do in t=
he
>table classe you are welcome, since i am not too experienced with c++ an=
y
>input are welcome!
>
>Ah... my previous problems with that class continues...
>
>[]'s


valarray is an array container optimised for numerical computations. It i=
s
equivalent to Fortran's arrays. This means that it does not provide many
facilities so as to achieve that. I think valarray is what you are lookin=
g
for.


Why the problem is not fixed? As i told, you had forgotten one line of co=
de:


template<class T>

>void Table<T>::push(T& newObject)
>{



Ioannis Vranos=20

* Programming pages: http://www.noicys.freeurl.com
* Alternative URL: http://run.to/noicys=20

Re: [Dev-C++] Scope in Template

[Robson B. <rob...@su...>]

Thanks Vranos, how could i forget the template definition???  That's why im
knocking my head!!

[]'s

Re: [Dev-C++] Scope in Template

[Robson B. <rob...@su...>]

>>vector is optimized in space/time for regular use. Yours will be less
>>flexible and less efficient.


>>There are other containers too you know, including valarray.


Maybe, Ioannis. But i'm projecting the ctable to take care specifically of
my game project, since i will not use some of the vector features. the
vector header file increases my finex (final exe) ;-)  about 15kb and it is
not desireable for a 150kb game. Maybe some people find it usefull when i
finish it. If you have some sugestion about what to do or not to do in the
table classe you are welcome, since i am not too experienced with c++ any
input are welcome!

Ah... my previous problems with that class continues...

[]'s