Fixed English in a comment; trimmed trailing whitespace;
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@ -2,7 +2,7 @@
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/* Dictionary object implementation using a hash table */
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/* The distribution includes a separate file, Objects/dictnotes.txt,
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describing explorations into dictionary design and optimization.
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describing explorations into dictionary design and optimization.
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It covers typical dictionary use patterns, the parameters for
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tuning dictionaries, and several ideas for possible optimizations.
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*/
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@ -519,10 +519,10 @@ PyDict_GetItem(PyObject *op, PyObject *key)
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}
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/* CAUTION: PyDict_SetItem() must guarantee that it won't resize the
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* dictionary if it is merely replacing the value for an existing key.
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* This is means that it's safe to loop over a dictionary with
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* PyDict_Next() and occasionally replace a value -- but you can't
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* insert new keys or remove them.
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* dictionary if it's merely replacing the value for an existing key.
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* This means that it's safe to loop over a dictionary with PyDict_Next()
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* and occasionally replace a value -- but you can't insert new keys or
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* remove them.
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*/
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int
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PyDict_SetItem(register PyObject *op, PyObject *key, PyObject *value)
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@ -554,15 +554,15 @@ PyDict_SetItem(register PyObject *op, PyObject *key, PyObject *value)
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/* If we added a key, we can safely resize. Otherwise just return!
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* If fill >= 2/3 size, adjust size. Normally, this doubles or
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* quaduples the size, but it's also possible for the dict to shrink
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* (if ma_fill is much larger than ma_used, meaning a lot of dict
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* (if ma_fill is much larger than ma_used, meaning a lot of dict
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* keys have been * deleted).
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*
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*
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* Quadrupling the size improves average dictionary sparseness
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* (reducing collisions) at the cost of some memory and iteration
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* speed (which loops over every possible entry). It also halves
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* the number of expensive resize operations in a growing dictionary.
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*
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* Very large dictionaries (over 50K items) use doubling instead.
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*
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* Very large dictionaries (over 50K items) use doubling instead.
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* This may help applications with severe memory constraints.
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*/
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if (!(mp->ma_used > n_used && mp->ma_fill*3 >= (mp->ma_mask+1)*2))
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@ -734,7 +734,7 @@ dict_dealloc(register dictobject *mp)
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PyMem_DEL(mp->ma_table);
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if (num_free_dicts < MAXFREEDICTS && mp->ob_type == &PyDict_Type)
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free_dicts[num_free_dicts++] = mp;
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else
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else
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mp->ob_type->tp_free((PyObject *)mp);
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Py_TRASHCAN_SAFE_END(mp)
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}
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@ -2251,7 +2251,7 @@ static PyObject *dictiter_iternextitem(dictiterobject *di)
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Py_DECREF(PyTuple_GET_ITEM(result, 1));
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} else {
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result = PyTuple_New(2);
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if (result == NULL)
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if (result == NULL)
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return NULL;
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}
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di->len--;
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