On Jul 11, 4:41 pm, "Alf P. Steinbach" <al...@start.no> wrote:
* terminator:
On Jul 10, 2:54 pm, "Alf P. Steinbach" <a...@start.no> wrote:
* terminator:
On Jul 10, 6:46 am, "Alf P. Steinbach" <a...@start.no> wrote:
Pass a vector of pairs.
or pass a pair of vectors:
#include <vector>
void do_math(const std::vector<double>& ,const std::vector<double>&);
void myfunc(){
std::vector<double> v1,v2;
v1[1]=someValue1;
v1[2]=someValue2;
//and so forth
...
do_math(v1,v2);
}
Perhaps you can figure out why I did not recommend that?
Please clarify your point ; I am not that sharp.
A vector of pairs guarantees that there will be pairs of values, only.
A pair of vectors offers no such guarantee: the vector sizes can be
different. This introduces an unnecessary point of failure and error
detection (with attendant complexity) in the 'do_math' function.
(Btw., I think you meant 'push_back', not assignment, above. Or else
you meant to initialize the vectors with some size. As it stands the
above code is undefined behavior.)
Cheers,
- Alf
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