mirror of https://github.com/jab/bidict.git
16 lines
513 B
PHP
16 lines
513 B
PHP
Beware ``on_dup_kv=OVERWRITE``
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++++++++++++++++++++++++++++++
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Beware that ``on_dup_kv=OVERWRITE`` semantics
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(which :class:`loosebidict <bidict.loosebidict>` uses by default)
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cause the following potentially surprising behavior::
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>>> from bidict import loosebidict
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>>> b = loosebidict({'one': 1, 'two': 2})
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>>> b['one'] = 2
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>>> b
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loosebidict({'one': 2})
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That is, setting an existing key to the value of a different existing item
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causes both existing items to be collapsed into a single item.
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