Another bug with the rest operator:

function f(required string param1, required numeric param2, ... date param3) // does not work in CF2021. Does not error, but ignores the rest operator

Repro (https://trycf.com/gist/850662c058d620ce94f39e2c7e43737b/acf2021?theme=monokai):

function f(required string param1, required numeric param2, ... date param3) {
    return arguments
}


result = f("a string", 42, createDate(2011,3,24), createDate(2016, 8, 17))
writeDump(var=result, label="actual")

expected = {
    param1 = "a string",
    param2 = 42,
    param3 = [createDate(2011,3,24), createDate(2016, 8, 17)]
}
writeDump(var=expected, label="expected")

But technically you're passing in a 4th param and the 3rd is not an array its scoped as a date nor passed in as an array. Not sure I understand the error/bug.

The Rest Operator (

...

) is a new syntax in CF2021.

the Rest syntax collects and condenses [iterables] into a single element

It's supposed to take everything passed to the function starting at

...

and group them into an array referenced by

param3

. It's not.

Oh I missed that, gotcha

If you take out

date

it works as expected... And similarly, if you change it to string (and change the inputs accordingly) it fails in the same way.

Well yeah... but I specifically want an array of dates

Yeah, sorry. that' wasn't meant to be a solution - more of a "you have got to be kidding me"