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python Programming Glossary: refcountWriting Python bindings for C++ code that use OpenCV http://stackoverflow.com/questions/12957492/writing-python-bindings-for-c-code-that-use-opencv m Mat ndims size type PyArray_DATA o step if m.data m.refcount refcountFromPyObject o m.addref protect the original numpy array.. ndims size type PyArray_DATA o step if m.data m.refcount refcountFromPyObject o m.addref protect the original numpy array from.. const Mat m if m.data Py_RETURN_NONE Mat temp p Mat m if p refcount p allocator g_numpyAllocator temp.allocator g_numpyAllocator..
http://stackoverflow.com/questions/4657764/py-incref-decref-when collected by Python and it is only marked for GC with refcount 0 thus you need to DECREF if you're not going to return it... you also are retaining a copy. So again if you create it refcount 1. If you then do INCREF then refcount 2. But this is not what.. if you create it refcount 1. If you then do INCREF then refcount 2. But this is not what you want you want to return with refcount..
int((0.1+0.7)*10) = 7 in several languages. How to prevent this? http://stackoverflow.com/questions/6439140/int0-10-710-7-in-several-languages-how-to-prevent-this internally as 8 debug_zval_dump 0.1 0.7 10 double 8 refcount 1 debug_zval_dump int 0.1 0.7 10 long 7 refcount 1 debug_zval_dump.. double 8 refcount 1 debug_zval_dump int 0.1 0.7 10 long 7 refcount 1 debug_zval_dump float 0.1 0.7 10 double 8 refcount 1 Python.. 7 refcount 1 debug_zval_dump float 0.1 0.7 10 double 8 refcount 1 Python 0.1 0.7 10 7.9999999999999991 int 0.1 0.7 10 7 Javascript..
how soon is `__del__` called after reference count drops to zero? http://stackoverflow.com/questions/9796643/how-soon-is-del-called-after-reference-count-drops-to-zero 's rather quirky semantics in order to call __del__ the refcount of the object is temporarily increased and the __del__ method.. called as soon as the reference count drops to zero since refcounting is the only way __del__ methods are called and the only chance..
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