Re: Class hierarchy generated from a template
Dimitar wrote:
What is wrong with the following:
template<size_t size> class X;
'size_t' is undefined. You need to add '#include <cstddef>' before
this line, for example. Otherwise, change 'size_t' to 'unsigned'.
template<>
class X<0> {};
template<>
class X<1>
{
public:
void M(const char (&x)[1]) {}
};
template<size_t size>
class X : public X<size - 1>
{
public:
void M(const char (&x)[size]) {}
This function 'M' hides the 'M' in the base class. Please add
using X<size-1>::M;
here.
};
Sample use would be:
char arr[3] = "ab";
X<4> x;
x.M(arr);
However this does not compile with MS VC7. If arr has size 4 then it
compiles.
Correct. You need to fix it as I suggested above.
Am I trying to do something that is not possible - for example the
line "class X : public X<size - 1>"? If this is not valid I would
expect that it should not compile at all then (have not had chance to
test with gcc) or at least give some warning.
And No, I can not use vector, or string, or anything more inteligent
than C-array (there are reasons why, but they are not related to the
question in this post)
V
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