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Made len() work on dlib.range objects.

This commit is contained in:
Davis King 2013-09-01 13:03:33 -04:00
parent 10caab26a3
commit 8da213ccc2
1 changed files with 11 additions and 2 deletions
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13
tools/python/src/basic.cpp
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@ -140,6 +140,14 @@ string sparse_vector__repr__ (const std::vector<std::pair<unsigned long,double>
return sout.str();
}
unsigned long range_len(const std::pair<unsigned long, unsigned long>& r)
{
if (r.second > r.first)
return r.second-r.first;
else
return 0;
}
template <typename T>
void resize(T& v, unsigned long n) { v.resize(n); }
@ -174,11 +182,12 @@ void bind_basic_types()
typedef pair<unsigned long,unsigned long> range_type;
class_<range_type>("range", "This object is used to represent a range of elements in an array.", init<>() )
.def(init<unsigned long,unsigned long>())
.def_readwrite("begin",&range_type::first, "The index of the first element in the range.")
.def_readwrite("end",&range_type::second, "One past the index of the last element in the range.")
.def_readwrite("begin",&range_type::first, "The index of the first element in the range. This is represented using an unsigned integer.")
.def_readwrite("end",&range_type::second, "One past the index of the last element in the range. This is represented using an unsigned integer.")
.def("__str__", range__str__)
.def("__repr__", range__repr__)
.def("__iter__", &make_range_iterator)
.def("__len__", &range_len)
.def_pickle(serialize_pickle<range_type>());
class_<range_iter>("_range_iter")