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Clarify surjectivity, for diversity's sake (not the mailing-list, though)

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Antoine Pitrou 2013-09-14 03:37:52 +02:00
parent 0aedc93c61
commit 409b8134ad
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pep-0455.txt
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@ -53,7 +53,8 @@ and other dict-like classes in the standard library. Therefore, this PEP
won't rehash the semantics of most TransformDict methods. won't rehash the semantics of most TransformDict methods.
The transformation function needn't be bijective, it can be strictly The transformation function needn't be bijective, it can be strictly
surjective as in the case-insensitive example:: surjective as in the case-insensitive example (in other words, different
keys can lookup the same value)::
>>> d = TransformDict(str.casefold) >>> d = TransformDict(str.casefold)
>>> d['SomeKey'] = 5 >>> d['SomeKey'] = 5