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*From*: jacky.hoang93@xxxxxxxxx*Date*: Tue, 10 Sep 2019 10:44:14 -0700 (PDT)*References*: <b62bc163-64e5-46be-9c73-f80db1f553a4@googlegroups.com> <81EF6792-E7E3-46D5-BEEA-C58CD2ACE76E@gmail.com>

Thanks for your explanation Stephan!

On Tuesday, September 10, 2019 at 1:33:07 PM UTC-4, Stephan Merz wrote:

-- On Tuesday, September 10, 2019 at 1:33:07 PM UTC-4, Stephan Merz wrote:

Hi,Saksham already pointed out how to update a function at several argument positions. Writing/\ a' = [a EXCEPT ![x] = foo]/\ a' = [a EXCEPT ![y] = bar]implies that[a EXCEPT ![x] = foo] = [a EXCEPT ![y] = bar]which is unlikely to be true, which explains why you see line count 0 in TLC.StephanOn 10 Sep 2019, at 09:51, jacky....@xxxxxxxxx wrote:Hello,Suppose I have a function a, that has domain Z. Suppose x and y are in Z.I'm writing an action where both a[x] and a[y] must be changed.I have one line of the following form:

a' = [a EXCEPT ![x] = ...]and another like so:

a' = [a EXCEPT ![y] = ...]How would I be able to write this altogether as one? Having both doesn't seem to work with Model Checking as count = 0 for those lines.I apologize if I'm using the wrong terms to explain my problem.Thanks for any help--

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**References**:**[tlaplus] Merging EXCEPT statements***From:*jacky . hoang93

**Re: [tlaplus] Merging EXCEPT statements***From:*Stephan Merz

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