[Python-checkins] cpython: Add a comment about *not* caching the hash value. Issue #9685 suggested to

[christian.heimes]

http://hg.python.org/cpython/rev/17038de56fd4
changeset:   81310:17038de56fd4
user:        Christian Heimes <christian at cheimes.de>
date:        Mon Jan 07 21:24:18 2013 +0100
summary:
  Add a comment about *not* caching the hash value. Issue #9685 suggested to memorize the hash value, but the feature request was rejected because no speed ups were found.

files:
  Objects/tupleobject.c |  3 +++
  1 files changed, 3 insertions(+), 0 deletions(-)


diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
--- a/Objects/tupleobject.c
+++ b/Objects/tupleobject.c
@@ -322,6 +322,9 @@
 
      1082527, 1165049, 1082531, 1165057, 1247581, 1330103, 1082533,
      1330111, 1412633, 1165069, 1247599, 1495177, 1577699
+
+   Tests have shown that it's not worth to cache the hash value, see
+   issue #9685.
 */
 
 static Py_hash_t

-- 
Repository URL: http://hg.python.org/cpython