Hello kind people.
The folliowing code gives me a compilation error, under
MSVC 6.0 and intel 8.0 compiler. It compiles fine with
g++ 3.3.1 and borland 5.5
Can you tell me please if the code is correct?.
If the code is correct do you know any tip
to "circumvent " the compilation error?
I want just to sort a list of CTimeFunction:: timeFunc
objects having as key the t_ member.
Many thanks for your time.
Here is the code
// --------------------------------------------------
#include <algorithm> // Line 2
#include <list>
//
class CTimeFunction {
public:
struct timeFunc {
double t_, f_;
timeFunc () : t_(0.0), f_(0.0) {}
timeFunc (double t, double f) : t_(t), f_(f) {};
};
};
//
bool sort_by_time(co nst CTimeFunction:: timeFunc &a, const CTimeFunction:: timeFunc &b) {
return a.t_<b.t_;
}
//
int main () {
std::list<CTime Function::timeF unc> m_tim;
//
CTimeFunction:: timeFunc mt(0.0, 1.0);
m_tim.push_back (mt); // <--- Error Here (line 24)
//
m_tim.sort(sort _by_time);
//
}
// End of Code.
Here is the error message
test.cpp(24): error: no instance of overloaded function
"std::list< _Ty, _A>::sort [with _Ty=CTimeFuncti on::timeFunc,
_A=std::allocat or<CTimeFunctio n::timeFunc>]" matches the argument list
argument types are: (bool (const CTimeFunction:: timeFunc &, const CT
imeFunction::ti meFunc &))
object type is: std::list<CTime Function::timeF unc, std::allocator< CT
imeFunction::ti meFunc>>
m_tim.sort(sort _by_time);
^
compilation aborted for test.cpp (code 2)
--
tuko, the mexican - the ugly fellow 2 1759
tuko wrote:
< snip >
I think I did it finally. My mind was stopped...
I overloaded the operator< and I called the sort like
m_tim.sort(); Here is the code
// -------------------------------------------------- #include <algorithm> // Line 2 #include <list> // class CTimeFunction { public: struct timeFunc { double t_, f_; timeFunc () : t_(0.0), f_(0.0) {} timeFunc (double t, double f) : t_(t), f_(f) {}; }; }; // bool sort_by_time(co nst CTimeFunction:: timeFunc &a, const CTimeFunction:: timeFunc &b) { return a.t_<b.t_; }
bool operator<(const CTimeFunction:: timeFunc &a,
const CTimeFunction:: timeFunc &b) {
return a.t_<b.t_;
}
// int main () { std::list<CTime Function::timeF unc> m_tim; // CTimeFunction:: timeFunc mt(0.0, 1.0); m_tim.push_back (mt); // <--- Error Here (line 24) // m_tim.sort(sort _by_time);
m_tim.sort(); // }
// End of Code.
Here is the error message
test.cpp(24): error: no instance of overloaded function "std::list< _Ty, _A>::sort [with _Ty=CTimeFuncti on::timeFunc, _A=std::allocat or<CTimeFunctio n::timeFunc>]" matches the argument list argument types are: (bool (const CTimeFunction:: timeFunc &, const CT imeFunction::ti meFunc &)) object type is: std::list<CTime Function::timeF unc, std::allocator< CT imeFunction::ti meFunc>> m_tim.sort(sort _by_time); ^
compilation aborted for test.cpp (code 2)
Thanks for your time anyway.
--
tuko, the mexican - the ugly fellow
"tuko" <tu**@away.co m> wrote in message news:cd******** **@nic.grnet.gr ... tuko wrote:
< snip >
I think I did it finally. My mind was stopped... I overloaded the operator< and I called the sort like m_tim.sort();
Keep in mind that the std::list::sort () implementation provided by VC++6.0
has a bug. See http://www.dinkumware.com/vc_fixes.html for more
information.
Also, unless you have a specific reason for using a std::list, I would
recommend using a std::vector and sorting it with std::sort in the header
<algorithm>.
--
David Hilsee This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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