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Home » Modeling » EMF "Technology" (Ecore Tools, EMFatic, etc)  » How to declare type of empty collection in OCL?
How to declare type of empty collection in OCL? [message #595578] Tue, 14 November 2006 10:25
Tord Alenljung is currently offline Tord AlenljungFriend
Messages: 4
Registered: July 2009
Junior Member
How can I declare that for example a Set contains objects of some type
and then initialize it to be empty. Neither I or II below works, but III
does.

(I) Not OK
let a:Set(Integer)=Set{} in a

'Init expression type does not conform to type of variable (a).'

(II) Not OK
let a:Set(Integer)=Set(Integer){} in a

'1:20:1:31 "collectionTypeIdentifierCS" expected instead of "Set(Integer)"'

(III) OK
let a:Set(Integer)=Set{1,3,2} in a

2
1
3

Regards
Tord
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