Once, you can test it easily via e.g.
1 2 3
let x =
printfn "hi"
x + 1and then reference x a few times. (Note also how this differs from a member property inside a class.)
looks like the value is bound early on and the computation done only once under modules.
For classes, the computation happens each time the class is instantiated (and is not recomputed for that instance).
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let say I compute a simple value as
Will this be done only once? Or every time I reference x?