Generating records like functions

[jwnhy]

Hello, I'm new to TLA+ and trying to learn it.

I know that I can generate a set of all possible functions by writing

[{"A", "B"} -> {0, 1}] \* all functions from {"A", "B"} to {0, 1}

I'm wondering if there is a similar way for records?

For example, if I have a record that most of its fields is BOOLEAN, I'm wondering if I can write something like

mstatus \in [{SD, TSR, TW, TVM}: BOOLEAN] \* THIS DOES NOT WORK

Or is there a way to specify a function with different range for different domain?

e.g: f["x"] \in {0,1} f["y"] \in {4, 5}

Thanks,

jwnhy.

[Jeremy Wright]

Hello jwnhy,

Do you mean something like this?

``tlaplus

f == [x |-> {0, 1}, y |-> {4,5}]

``

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[Stephan Merz]

Sets of records are written like

[foo : BOOLEAN, bar : Nat]

A particular record is constructed as

[foo |-> FALSE, bar |-> 0]

See also section 16.1.8 of Specifying Systems.

Regards,

Stephan