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Meaning of '<:=' [message #1801552]

Tue, 22 January 2019 12:39

jo ber

Messages: 94
Registered: August 2018

Member

Hi
In several ATL examples I've seen the notation

<:=

. But I couldn't find documentation about its meaning. Could someone explain its signification?

thank you and kind regards,

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Re: Meaning of '<:=' [message #1801579 is a reply to message #1801552]

Tue, 22 January 2019 21:09

Dennis Wagelaar

Messages: 589
Registered: September 2012
Location: Belgium

Senior Member

It's ATL's assignment operator (vs. '<-', which is the binding operator). It is the same as '<-', except that it skips the source to target element tracing step. In EMFTVM:

b <- e.a

is the same as

b <:= e.a.resolve()

It is sometimes useful to suppress the source to target tracing mechanism.

Cheers,
Dennis

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