PluggableSet missing methods

[JupiterJones]

(#( 1 2 3 4 ) groupedBy: [ :i | i even ]) keys

This throws a DNU since PluggableSet has no accessors for hashBlock (or equalsBlock).

[dalehenrich]

PluggableSet inherits from Set which inherits from UnorderedCollection ... and I suspect that all UnorderedCollections will fail ... in fact it might be that only Array works properly?

[dassi]

Stumbled across the same issue. PluggableSet has no methods at all, this is rather suspicious anyway. I guess this has been forgotten when porting from Squeak's code (since it is in the Squeak package)?

The single user of PluggableSet is the method PluggableDictionary>>keys. Like in @JupiterJones example, this only yields to a DNU if you do groupedBy: followed by keys.

My temporary workaround sledgehammer solution, redefine the method, not using PluggableSet at all:

PluggableDictionary>>keys
  ^ super keys