On Saturday 16 June 2018 10:27 AM, H. Hirzel wrote:
> Another solution could be to do the test_in_  method #allTileScriptingElements.
> 
> 
> Give back an empty collection
> 
> 	(self respondsTo: #isTileScriptingElement) ifFalse: [^OrderedCollection new].
> 
> PasteUpMorph>>
> allTileScriptingElements
> 	"Answer a list of all the morphs that pertain to tile-scripting.  A
> sledge-hammer"
> 
> 	| all morphs |
> 	morphs := IdentitySet new: 400.
> 	(self respondsTo: #isTileScriptingElement) ifFalse: [^OrderedCollection new].
> 	self allMorphsAndBookPagesInto: morphs.

Should the respondsTo check occur before initializing morphs? Why init 
morph if the check leads to a return?

Regards .. Subbu