Sorting a vector with structs

[whofmans]

Hello, I would like to sort a vector(vlines), this is a vector with struct's(line). I want to sort the vector on name and on length. struct line{ CString name; double length; }; vector vlines; I know there is a function sort and that it uses a predikaat function. std::sort(vlines.begin(), vlines.end(), length()); std::sort(vlines.begin(), vlines.end(), name()); But how can i code the predikaat function's? or template's??:confused: I hope someone can help me? Thanks

[Joaquin M Lopez Munoz]

Those predicates are anything (functions, objects) that can be called with the same syntax as a function. So, even a function can do; for instance:

inline bool compare_line_by_length(const line&x,const line& y)
{
return x.name<y.name;
}

can be fed to std::sort like this:

std::sort(vlines.begin(), vlines.end(), compare_line_by_length);

Joaquín M López Muñoz Telefónica, Investigación y Desarrollo