Author: Carl Friedrich Bolz-Tereick <[email protected]>
Branch: rdict-fast-hash
Changeset: r93366:6a993ce073f5
Date: 2017-12-11 17:37 +0100
http://bitbucket.org/pypy/pypy/changeset/6a993ce073f5/
Log: explain what the arguments mean
diff --git a/rpython/rlib/objectmodel.py b/rpython/rlib/objectmodel.py
--- a/rpython/rlib/objectmodel.py
+++ b/rpython/rlib/objectmodel.py
@@ -749,6 +749,13 @@
return {}
def __init__(self, key_eq, key_hash, force_non_null=False,
fast_hash=False):
+ """ force_non_null=True means that the key can never be None (even if
+ the annotator things it could be)
+
+ fast_hash=True means that the hash function is very fast, meaning it's
+ efficient enough that the dict does not have to store the hash per key.
+ It also implies that neither the hash nor the eq function will mutate
+ the dictionary. """
self._dict = self._newdict()
self.key_eq = key_eq
self.key_hash = key_hash
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