I��m spotting real inconsistency in the specification and use of newFrom:

In Pharo and Object we have

newFrom: aSimilarObject

"Create an object that has similar contents to aSimilarObject. If the classes have any instance variables with the same names, copy them across. If this is bad for a class, override this method."

^ (self isVariable

ifTrue: [self basicNew: aSimilarObject basicSize]

ifFalse: [self basicNew]) copySameFrom: aSimilarObject

The ANSI standard does not define newFrom:

Now in Pharo some classes such dictionary expect as argument a dictionary but OrderedDictionary expects a like of association!

Set expects a collection,

Bag too and many others.

CompiledMethod expects a compiledMethod

I think that it would be good to strengthen this method and we could define newFromSibling: but it looks like a copy to me.

--------------------------------------------

St��phane Ducasse

http://stephane.ducasse.free.fr / http://www.pharo.org

03 59 35 87 52

Assistant: Aurore Dalle

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