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Home » Modeling » Epsilon » [ETL] Difference between = and ::=
[ETL] Difference between = and ::= [message #1730697] Wed, 27 April 2016 17:16 Go to next message
Nicolas   is currently offline Nicolas Friend
Messages: 38
Registered: October 2014
Member
Hello all,

Could someone explain me the difference between = and ::= ? For example, I've seen some of your example transformations and I see some rules doing things like:

t.name = s.name;
t.contents ::= s.contents;

What is the difference between that and:

t.name = s.name;
t.contents = s.contents;

Thanks Smile
Re: [ETL] Difference between = and ::= [message #1730698 is a reply to message #1730697] Wed, 27 April 2016 17:21 Go to previous messageGo to next message
Dimitris Kolovos is currently offline Dimitris KolovosFriend
Messages: 1595
Registered: July 2009
Location: York, UK
Senior Member

Hi Nicolas,

t.contents ::= s.contents; 


has the same semantics as

t.contents = s.contents.equivalent();


Cheers,
Dimitris
Re: [ETL] Difference between = and ::= [message #1730699 is a reply to message #1730698] Wed, 27 April 2016 17:22 Go to previous message
Nicolas   is currently offline Nicolas Friend
Messages: 38
Registered: October 2014
Member
Thank you Dimitris, I wasn't aware of those shortcuts Smile
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