[IronPython] IronPython.Objects.List doesn't support GetHashCode()

Chris Anderson chrisan at gmail.com
Thu May 12 18:39:55 CEST 2005

The problem with this model is that it requires you to subclass and use a 
special type. My goal is to enable simple usage in binding scenarios:
 _list.ItemsSource = range(5)
 This means that every list/dictionary/touple needs to support 
ICustomTypeDescriptor and GetHashCode/SyncRoot... The ICD requirement for 
object/dict is pretty solid, but I'll follow up with our databinding team to 
see if we can gracefully support non-hash supporting objects... 
 I'm unclear as to why returning the default CLR implementation of 
GetHashCode would be bad? It's unique to the life of the object and never 
changes... it won't be based on the containing data in the list, but it also 
shouldn't break any hashtable... no?

 On 5/12/05, Timothy Fitz <firemoth at gmail.com> wrote: 
> Not directly, but subclassing list and dict would work.
> class HashableList:
> def __hash__(self):
> return id(self)
> or
> clash HashableList:
> def __hash__(self):
> return 1
> To adapt simply:
> HashableList(MyExistingList)
> Disclaimer, I'm not sure if this works in IronPython today.
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