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Add a comment with implementation notes.

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Raymond Hettinger 2004-06-26 04:42:06 +00:00
parent a7f56bc0cc
commit 616f4f61ba
1 changed files with 7 additions and 0 deletions
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7
Modules/collectionsmodule.c
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@ -359,6 +359,13 @@ deque_item(dequeobject *deque, int i)
return item; return item;
} }
/* delitem() implemented in terms of rotate for simplicity and reasonable
performance near the end points. If for some reason this method becomes
popular, it is not hard to re-implement this using direct data movement
(similar to code in list slice assignment) and achieve a two or threefold
performance boost.
*/
static int static int
deque_del_item(dequeobject *deque, int i) deque_del_item(dequeobject *deque, int i)
{ {